继续上篇文章的学习《灵活掌握asp.net中gridview控件的多种使用方法(上)》，在此基础上巩固gridview控件的操作使用，更上一层楼。

11.GridView实现用“...”代替超长字符串：

效果图：

解决方法：数据绑定后过滤每一行即可

for (int i = 0; i <= GridView1.Rows.Count - 1; i++) { DataRowView mydrv; string gIntro; if (GridView1.PageIndex == 0) { mydrv = myds.Tables["飞狐工作室"].DefaultView[i];//表名 gIntro = Convert.ToString(mydrv["家庭住址"]);//所要处理的字段 GridView1.Rows[i].Cells[3].Text = SubStr(gIntro, 2); } else { mydrv = myds.Tables["飞狐工作室"].DefaultView[i + (5 * GridView1.PageIndex)]; gIntro = Convert.ToString(mydrv["家庭住址"]); GridView1.Rows[i].Cells[3].Text = SubStr(gIntro, 2); } }

调用的方法：

public string SubStr(string sString, int nLeng) { if (sString.Length <= nLeng) { return sString; } string sNewStr = sString.Substring(0, nLeng); sNewStr = sNewStr + "..."; return sNewStr; }

后台全部代码：

using System; using System.Data; using System.Configuration; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; using System.Data.SqlClient; public partial class _Default : System.Web.UI.Page { SqlConnection sqlcon; SqlCommand sqlcom; string strCon = "Data Source=(local);Database=北风贸易;Uid=sa;Pwd=sa"; protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { ViewState["SortOrder"] = "身份证号码"; ViewState["OrderDire"] = "ASC"; bind(); } } protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e) { GridView1.EditIndex = e.NewEditIndex; bind(); } protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e) { string sqlstr = "delete from 飞狐工作室 where 身份证号码='" + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'"; sqlcon = new SqlConnection(strCon); sqlcom = new SqlCommand(sqlstr,sqlcon); sqlcon.Open(); sqlcom.ExecuteNonQuery(); sqlcon.Close(); bind(); } protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e) { sqlcon = new SqlConnection(strCon); string sqlstr = "update 飞狐工作室 set 姓名='" + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim() + "',家庭住址='" + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[3].Controls[0])).Text.ToString().Trim() + "' where 身份证号码='" + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'"; sqlcom=new SqlCommand(sqlstr,sqlcon); sqlcon.Open(); sqlcom.ExecuteNonQuery(); sqlcon.Close(); GridView1.EditIndex = -1; bind(); } protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e) { GridView1.EditIndex = -1; bind(); } public void bind() { string sqlstr = "select top 5 * from 飞狐工作室"; sqlcon = new SqlConnection(strCon); SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon); DataSet myds = new DataSet(); sqlcon.Open(); myda.Fill(myds, "飞狐工作室"); GridView1.DataSource = myds; GridView1.DataKeyNames = new string[] { "身份证号码" }; GridView1.DataBind(); for (int i = 0; i <= GridView1.Rows.Count - 1; i++) { DataRowView mydrv; string gIntro; if (GridView1.PageIndex == 0) { mydrv = myds.Tables["飞狐工作室"].DefaultView[i]; gIntro = Convert.ToString(mydrv["家庭住址"]); GridView1.Rows[i].Cells[3].Text = SubStr(gIntro, 2); } else { mydrv = myds.Tables["飞狐工作室"].DefaultView[i + (5 * GridView1.PageIndex)]; gIntro = Convert.ToString(mydrv["家庭住址"]); GridView1.Rows[i].Cells[3].Text = SubStr(gIntro, 2); } } sqlcon.Close(); } public string SubStr(string sString, int nLeng) { if (sString.Length <= nLeng) { return sString; } string sNewStr = sString.Substring(0, nLeng); sNewStr = sNewStr + "..."; return sNewStr; } protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e) { //如果是绑定数据行 if (e.Row.RowType == DataControlRowType.DataRow) { ////鼠标经过时，行背景色变 //e.Row.Attributes.Add("onmouseover", "this.style.backgroundColor='#E6F5FA'"); ////鼠标移出时，行背景色变 //e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor='#FFFFFF'"); ////当有编辑列时，避免出错，要加的RowState判断 //if (e.Row.RowState == DataControlRowState.Normal || e.Row.RowState == DataControlRowState.Alternate) //{ // ((LinkButton)e.Row.Cells[6].Controls[0]).Attributes.Add("onclick", "javascript:return confirm('你确认要删除：/"" + e.Row.Cells[1].Text + "/"吗"); //} } if (e.Row.RowIndex != -1) { int id = e.Row.RowIndex + 1; e.Row.Cells[0].Text = id.ToString(); } } }

12.GridView一般换行与强制换行：

效果图：

首先设置<asp:BoundField DataField="家庭住址" HeaderText="家庭住址" ItemStyle-Width="100" />

gridview里有一列绑定的数据很长，显示的时候在一行里面显示，页面拉得很宽。

原因是连续英文段为一个整体导致的，在RowDataBound中添加上了一句e.Row.Cells[2].Style.Add("word-break", "break-all")就可以。

如果要给所有的列增加此属性：

protected void Page_Load(object sender, EventArgs e) { //正常换行 GridView1.Attributes.Add("style", "word-break:keep-all;word-wrap:normal"); //下面这行是自动换行 GridView1.Attributes.Add("style", "word-break:break-all;word-wrap:break-word"); if (!IsPostBack) { bind();//调用数据绑定即可 } }

总之：善用CSS的word-break:break-all;word-wrap:break-word属性即可，这个属性是通用的对于顽固的南换行问题都可以解决，不局限于GridView。

13.GridView显示隐藏某一列：

本方案为月儿独创，不同于网上其他方式，我觉得用一个CheckBox更人性化，这样可以隐藏不必要的列，让用户自己选择需要出现的列，在处理多列时这是一个很好的解决方案！

效果图：

图1-开始

图2-点击显示的CheckBox后

解决方案：

public void bind() { string sqlstr = "select top 5 * from 飞狐工作室"; sqlcon = new SqlConnection(strCon); SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon); DataSet myds = new DataSet(); sqlcon.Open(); myda.Fill(myds, "飞狐工作室"); GridView1.DataSource = myds; GridView1.DataKeyNames = new string[] { "身份证号码" }; GridView1.DataBind(); sqlcon.Close(); GridView1.Columns[3].Visible = false;//一开始隐藏 CheckBox1.Checked = false;//如果不这样后面的代码会把他True } 双击CheckBox1，在CheckedChanged方法里写上代码，最后代码如下： protected void CheckBox1_CheckedChanged(object sender, EventArgs e) { GridView1.Columns[3].Visible=! GridView1.Columns[3].Visible; Response.Write("GridView1的第4列现在的显示隐藏状态是："+GridView1.Columns[3].Visible.ToString()); }

注意：CheckBox1的AutoPostBack要True！

后台全部代码如下：

using System; using System.Data; using System.Configuration; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; using System.Data.SqlClient; public partial class _Default : System.Web.UI.Page { SqlConnection sqlcon; SqlCommand sqlcom; string strCon = "Data Source=(local);Database=北风贸易;Uid=sa;Pwd=sa"; protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { ViewState["SortOrder"] = "身份证号码"; ViewState["OrderDire"] = "ASC"; bind(); } } protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e) { GridView1.EditIndex = e.NewEditIndex; bind(); } protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e) { string sqlstr = "delete from 飞狐工作室 where 身份证号码='" + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'"; sqlcon = new SqlConnection(strCon); sqlcom = new SqlCommand(sqlstr,sqlcon); sqlcon.Open(); sqlcom.ExecuteNonQuery(); sqlcon.Close(); bind(); } protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e) { sqlcon = new SqlConnection(strCon); string sqlstr = "update 飞狐工作室 set 姓名='" + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim() + "',家庭住址='" + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[3].Controls[0])).Text.ToString().Trim() + "' where 身份证号码='" + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'"; sqlcom=new SqlCommand(sqlstr,sqlcon); sqlcon.Open(); sqlcom.ExecuteNonQuery(); sqlcon.Close(); GridView1.EditIndex = -1; bind(); } protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e) { GridView1.EditIndex = -1; bind(); } public void bind() { string sqlstr = "select top 5 * from 飞狐工作室"; sqlcon = new SqlConnection(strCon); SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon); DataSet myds = new DataSet(); sqlcon.Open(); myda.Fill(myds, "飞狐工作室"); GridView1.DataSource = myds; GridView1.DataKeyNames = new string[] { "身份证号码" }; GridView1.DataBind(); sqlcon.Close(); GridView1.Columns[3].Visible = false; CheckBox1.Checked = false; } protected void CheckBox1_CheckedChanged(object sender, EventArgs e) { GridView1.Columns[3].Visible=! GridView1.Columns[3].Visible; Response.Write("GridView1的第4列现在的显示隐藏状态是："+GridView1.Columns[3].Visible.ToString()); } }

前台代码：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server"> <title>GridView显示隐藏列 </title> </head> <body> <form id="form1" runat="server"> <div> <asp:GridView ID="GridView1" runat="server" CellPadding="3" OnRowDeleting="GridView1_RowDeleting" OnRowEditing="GridView1_RowEditing" OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" Border BorderWidth="1px" Font-Size="12px" > <FooterStyle BackColor="White" ForeColor="#000066" /> <Columns> <asp:BoundField DataField="身份证号码" HeaderText="编号" ReadOnly="True" /> <asp:BoundField DataField="姓名" HeaderText="用户姓名" /> <asp:BoundField DataField="邮政编码" HeaderText="邮政编码" SortExpression="邮政编码" /> <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" /> <asp:CommandField HeaderText="选择" ShowSelectButton="True" /> <asp:CommandField HeaderText="编辑" ShowEditButton="True" /> <asp:CommandField HeaderText="删除" ShowDeleteButton="True" /> </Columns> <RowStyle ForeColor="#000066" /> <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" /> <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" /> <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" /> </asp:GridView> <asp:CheckBox ID="CheckBox1" runat="server" Font-Size="12px" OnCheckedChanged="CheckBox1_CheckedChanged" Text="显示隐藏家庭住址" /></div> </form> </body> </html>

14.GridView弹出新页面/弹出制定大小位置新窗口：

效果图：

方案一：简单的方法，新窗口不固定大小

<asp:GridView ID="GridView1" runat="server" CellPadding="3" OnRowDeleting="GridView1_RowDeleting" OnRowEditing="GridView1_RowEditing" OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" Border BorderWidth="1px" Font-Size="12px" > <FooterStyle BackColor="White" ForeColor="#000066" /> <Columns> <asp:BoundField DataField="身份证号码" HeaderText="编号" ReadOnly="True" /> <asp:BoundField DataField="邮政编码" HeaderText="邮政编码" SortExpression="邮政编码" /> <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" /> <asp:HyperLinkField HeaderText="姓名" Text="姓名" DataNavigateUrlFields="姓名" DataNavigateUrlFormatString="Default6.aspx" Target="mainframe" NavigateUrl="~/Default6.aspx" DataTextField="姓名" > </asp:HyperLinkField> <asp:CommandField HeaderText="选择" ShowSelectButton="True" /> <asp:CommandField HeaderText="编辑" ShowEditButton="True" /> <asp:CommandField HeaderText="删除" ShowDeleteButton="True" /> </Columns> <RowStyle ForeColor="#000066" /> <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" /> <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" /> <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" /> </asp:GridView>

DataNavigateUrlFields是链接的字段名，DataNavigateUrlFormatString是路径。

方案二：精确控制弹出窗口大小位置

<asp:HyperLinkColumn DataNavigateUrlField="EmployeeID" DataNavigateUrlFormatString="javascript:varwin=window.open('detail.aspx?ID={0}',null,'width=300,height=200');window.Close();" DataTextField="LastName" HeaderText="LastName"></asp:HyperLinkColumn>

15.GridView固定表头(不用javascript只用CSS!，很好用)：

效果图：

代码：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server"> <title>GridView固定表头</title> <style> .Freezing { position:relative ; table-layout:fixed; top:expression_r(this.offsetParent.scrollTop); z-index: 10; } .Freezing th{text-overflow:ellipsis;overflow:hidden;white-space: nowrap;padding:2px;} </style> </head> <body> <form id="form1" runat="server"> <div id="dvBody"> <asp:GridView ID="GridView1" runat="server" CellPadding="3" OnRowDeleting="GridView1_RowDeleting" OnRowEditing="GridView1_RowEditing" OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" Border BorderWidth="1px" Font-Size="12px" OnRowCreated="GridView1_RowCreated" > <FooterStyle BackColor="White" ForeColor="#000066" /> <Columns> <asp:BoundField DataField="身份证号码" HeaderText="编号" ReadOnly="True" /> <asp:BoundField DataField="邮政编码" HeaderText="邮政编码" SortExpression="邮政编码" /> <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" /> <asp:BoundField DataField="姓名" HeaderText="姓名" /> </Columns> <RowStyle ForeColor="#000066" /> <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" /> <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" CssClass="ms-formlabel DataGridFixedHeader"/> <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" CssClass="Freezing"/> </asp:GridView> </div> </form> </body> </html>

用法：CSS设如上的样式，HeaderStyle加CssClass="Freezing，套住GridView的Div设置高度宽度 <div >

16.GridView合并表头多重表头无错完美版（以合并3列3行举例）

效果图：

后台代码：

using System; using System.Data; using System.Configuration; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; using System.Data.SqlClient; using System.Drawing; public partial class _Default : System.Web.UI.Page { SqlConnection sqlcon; SqlCommand sqlcom; string strCon = "Data Source=(local);Database=北风贸易;Uid=sa;Pwd=sa"; protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { bind(); } } protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e) { GridView1.EditIndex = e.NewEditIndex; bind(); } protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e) { sqlcon = new SqlConnection(strCon); string sqlstr = "update 飞狐工作室 set 姓名='" + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim() + "',家庭住址='" + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[3].Controls[0])).Text.ToString().Trim() + "' where 身份证号码='" + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'"; sqlcom=new SqlCommand(sqlstr,sqlcon); sqlcon.Open(); sqlcom.ExecuteNonQuery(); sqlcon.Close(); GridView1.EditIndex = -1; bind(); } protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e) { GridView1.EditIndex = -1; bind(); } public void bind() { string sqlstr = "select top 10 * from 飞狐工作室"; sqlcon = new SqlConnection(strCon); SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon); DataSet myds = new DataSet(); sqlcon.Open(); myda.Fill(myds, "飞狐工作室"); GridView1.DataSource = myds; GridView1.DataKeyNames = new string[] { "身份证号码" }; GridView1.DataBind(); sqlcon.Close(); } //这里就是解决方案 protected void GridView1_RowCreated(object sender, GridViewRowEventArgs e) { switch (e.Row.RowType) { case DataControlRowType.Header: //第一行表头 TableCellCollection tcHeader = e.Row.Cells; tcHeader.Clear(); tcHeader.Add(new TableHeaderCell()); tcHeader[0].Attributes.Add("rowspan", "3"); //跨Row tcHeader[0].Attributes.Add("bgcolor", "white"); tcHeader[0].Text = ""; tcHeader.Add(new TableHeaderCell()); //tcHeader[1].Attributes.Add("bgcolor", "Red"); tcHeader[1].Attributes.Add("colspan", "6"); //跨Column tcHeader[1].Text = "全部信息</th></tr><tr>"; //第二行表头 tcHeader.Add(new TableHeaderCell()); tcHeader[2].Attributes.Add("bgcolor", "DarkSeaGreen"); tcHeader[2].Text = "身份证号码"; tcHeader.Add(new TableHeaderCell()); tcHeader[3].Attributes.Add("bgcolor", "LightSteelBlue"); tcHeader[3].Attributes.Add("colspan", "2"); tcHeader[3].Text = "基本信息"; tcHeader.Add(new TableHeaderCell()); tcHeader[4].Attributes.Add("bgcolor", "DarkSeaGreen"); tcHeader[4].Text = "福利"; tcHeader.Add(new TableHeaderCell()); tcHeader[5].Attributes.Add("bgcolor", "LightSteelBlue"); tcHeader[5].Attributes.Add("colspan", "2"); tcHeader[5].Text = "联系方式</th></tr><tr>"; //第三行表头 tcHeader.Add(new TableHeaderCell()); tcHeader[6].Attributes.Add("bgcolor", "Khaki"); tcHeader[6].Text = "身份证号码"; tcHeader.Add(new TableHeaderCell()); tcHeader[7].Attributes.Add("bgcolor", "Khaki"); tcHeader[7].Text = "姓名"; tcHeader.Add(new TableHeaderCell()); tcHeader[8].Attributes.Add("bgcolor", "Khaki"); tcHeader[8].Text = "出生日期"; tcHeader.Add(new TableHeaderCell()); tcHeader[9].Attributes.Add("bgcolor", "Khaki"); tcHeader[9].Text = "薪水"; tcHeader.Add(new TableHeaderCell()); tcHeader[10].Attributes.Add("bgcolor", "Khaki"); tcHeader[10].Text = "家庭住址"; tcHeader.Add(new TableHeaderCell()); tcHeader[11].Attributes.Add("bgcolor", "Khaki"); tcHeader[11].Text = "邮政编码"; break; } } }

前台：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server"> <title>GridView合并多重表头表头</title> </head> <body > <form id="form1" runat="server"> <div > <asp:GridView ID="GridView1" runat="server" CellPadding="3" OnRowEditing="GridView1_RowEditing" OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" Border BorderWidth="1px" Font-Size="12px" OnRowCreated="GridView1_RowCreated" > <FooterStyle BackColor="White" ForeColor="#000066" /> <Columns> <asp:CommandField HeaderText="编辑" ShowEditButton="True" /> <asp:BoundField DataField="身份证号码" HeaderText="编号" ReadOnly="True" /> <asp:BoundField DataField="姓名" HeaderText="姓名" /> <asp:BoundField DataField="出生日期" HeaderText="邮政编码" /> <asp:BoundField DataField="起薪" HeaderText="起薪" /> <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" /> <asp:BoundField DataField="邮政编码" HeaderText="邮政编码" /> </Columns> <RowStyle ForeColor="#000066" /> <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" /> <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" CssClass="ms-formlabel DataGridFixedHeader"/> <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" /> </asp:GridView> </div> </form> </body> </html>

17.GridView突出显示某一单元格（例如金额低于多少，分数不及格等）

效果图：

解决方案：主要是绑定后过滤

GridView1.DataBind(); for (int i = 0; i <= GridView1.Rows.Count - 1; i++) { DataRowView mydrv = myds.Tables["飞狐工作室"].DefaultView[i]; string score = Convert.ToString(mydrv["起薪"]); if (Convert.ToDouble(score) < 34297.00)//大家这里根据具体情况设置可能ToInt32等等 { GridView1.Rows[i].Cells[4].BackColor = System.Drawing.Color.Red; } } sqlcon.Close();

全部后台代码：

using System; using System.Data; using System.Configuration; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; using System.Data.SqlClient; using System.Drawing; public partial class Default7 : System.Web.UI.Page { SqlConnection sqlcon; SqlCommand sqlcom; string strCon = "Data Source=(local);Database=北风贸易;Uid=sa;Pwd=sa"; protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { bind(); } } protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e) { GridView1.EditIndex = e.NewEditIndex; bind(); } protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e) { sqlcon = new SqlConnection(strCon); string sqlstr = "update 飞狐工作室 set 姓名='" + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim() + "',家庭住址='" + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[3].Controls[0])).Text.ToString().Trim() + "' where 身份证号码='" + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'"; sqlcom = new SqlCommand(sqlstr, sqlcon); sqlcon.Open(); sqlcom.ExecuteNonQuery(); sqlcon.Close(); GridView1.EditIndex = -1; bind(); } protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e) { GridView1.EditIndex = -1; bind(); } public void bind() { string sqlstr = "select top 10 * from 飞狐工作室"; sqlcon = new SqlConnection(strCon); SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon); DataSet myds = new DataSet(); sqlcon.Open(); myda.Fill(myds, "飞狐工作室"); GridView1.DataSource = myds; GridView1.DataKeyNames = new string[] { "身份证号码" }; GridView1.DataBind(); for (int i = 0; i <= GridView1.Rows.Count - 1; i++) { DataRowView mydrv = myds.Tables["飞狐工作室"].DefaultView[i]; string score = Convert.ToString(mydrv["起薪"]); if (Convert.ToDouble(score) < 34297.00)//大家这里根据具体情况设置可能ToInt32等等 { GridView1.Rows[i].Cells[4].BackColor = System.Drawing.Color.Red; } } sqlcon.Close(); } }

前台代码：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <head id="Head1" runat="server"> <title>GridView突出显示某一单元格 清清月儿http://blog.csdn.net/21aspnet </title> </head> <body > <form id="form1" runat="server"> <div > <asp:GridView ID="GridView1" runat="server" CellPadding="3" OnRowEditing="GridView1_RowEditing" OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" Border BorderWidth="1px" Font-Size="12px" > <FooterStyle BackColor="White" ForeColor="#000066" /> <Columns> <asp:CommandField HeaderText="编辑" ShowEditButton="True" /> <asp:BoundField DataField="身份证号码" HeaderText="编号" ReadOnly="True" /> <asp:BoundField DataField="姓名" HeaderText="姓名" /> <asp:BoundField DataField="出生日期" HeaderText="邮政编码" /> <asp:BoundField DataField="起薪" HeaderText="起薪" DataFormatString="{0:C}" HtmlEncode="false"/> <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" /> <asp:BoundField DataField="邮政编码" HeaderText="邮政编码" /> </Columns> <RowStyle ForeColor="#000066" /> <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" /> <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" CssClass="ms-formlabel DataGridFixedHeader"/> <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" /> </asp:GridView> </div> </form> </body> </html>

18.GridView加入自动求和求平均值小计

效果图：

解决方案：

private double sum = 0;//取指定列的数据和，你要根据具体情况对待可能你要处理的是int protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e) { if (e.Row.RowIndex >= 0) { sum += Convert.ToDouble(e.Row.Cells[6].Text); } else if (e.Row.RowType == DataControlRowType.Footer) { e.Row.Cells[5].Text = "总薪水为："; e.Row.Cells[6].Text = sum.ToString(); e.Row.Cells[3].Text = "平均薪水为："; e.Row.Cells[4].Text = ((int)(sum / GridView1.Rows.Count)).ToString(); } }

后台全部代码：

using System; using System.Data; using System.Configuration; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; using System.Data.SqlClient; using System.Drawing; public partial class Default7 : System.Web.UI.Page { SqlConnection sqlcon; SqlCommand sqlcom; string strCon = "Data Source=(local);Database=北风贸易;Uid=sa;Pwd=sa"; protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { bind(); } } protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e) { GridView1.EditIndex = e.NewEditIndex; bind(); } protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e) { sqlcon = new SqlConnection(strCon); string sqlstr = "update 飞狐工作室 set 姓名='" + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim() + "',家庭住址='" + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[3].Controls[0])).Text.ToString().Trim() + "' where 身份证号码='" + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'"; sqlcom = new SqlCommand(sqlstr, sqlcon); sqlcon.Open(); sqlcom.ExecuteNonQuery(); sqlcon.Close(); GridView1.EditIndex = -1; bind(); } protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e) { GridView1.EditIndex = -1; bind(); } public void bind() { string sqlstr = "select top 5 * from 飞狐工作室"; sqlcon = new SqlConnection(strCon); SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon); DataSet myds = new DataSet(); sqlcon.Open(); myda.Fill(myds, "飞狐工作室"); GridView1.DataSource = myds; GridView1.DataKeyNames = new string[] { "身份证号码" }; GridView1.DataBind(); sqlcon.Close(); } private double sum = 0;//取指定列的数据和 protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e) { if (e.Row.RowIndex >= 0) { sum += Convert.ToDouble(e.Row.Cells[6].Text); } else if (e.Row.RowType == DataControlRowType.Footer) { e.Row.Cells[5].Text = "总薪水为："; e.Row.Cells[6].Text = sum.ToString(); e.Row.Cells[3].Text = "平均薪水为："; e.Row.Cells[4].Text = ((int)(sum / GridView1.Rows.Count)).ToString(); } } }

前台：唯一的花头就是设置ShowFooter="True" ，否则默认表头为隐藏的！

<asp:GridView ID="GridView1" runat="server" CellPadding="3" OnRowEditing="GridView1_RowEditing" OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" Border BorderWidth="1px" Font-Size="12px" OnRowDataBound="GridView1_RowDataBound" ShowFooter="True" > <FooterStyle BackColor="White" ForeColor="#000066" /> <Columns> <asp:CommandField HeaderText="编辑" ShowEditButton="True" /> <asp:BoundField DataField="身份证号码" HeaderText="编号" ReadOnly="True" /> <asp:BoundField DataField="姓名" HeaderText="姓名" /> <asp:BoundField DataField="出生日期" HeaderText="邮政编码" /> <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" /> <asp:BoundField DataField="邮政编码" HeaderText="邮政编码" /> <asp:BoundField DataField="起薪" HeaderText="起薪" /> </Columns> <RowStyle ForeColor="#000066" /> <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" /> <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" CssClass="ms-formlabel DataGridFixedHeader"/> <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" /> </asp:GridView>

19.GridView数据导入Excel/Excel数据读入GridView

效果图：

解决方案：

页面增加一个按钮，单击事件添加如下方法：

protected void Button1_Click(object sender, EventArgs e) { Export("application/ms-excel", "学生成绩报表.xls"); } private void Export(string FileType, string FileName) { Response.Charset = "GB2312"; Response.ContentEncoding = System.Text.Encoding.UTF7; Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(FileName, Encoding.UTF8).ToString()); Response.ContentType = FileType; this.EnableViewState = false; StringWriter tw = new StringWriter(); HtmlTextWriter hw = new HtmlTextWriter(tw); GridView1.RenderControl(hw); Response.Write(tw.ToString()); Response.End(); } //如果没有下面方法会报错类型“GridView”的控件“GridView1”必须放在具有 runat=server 的窗体标记内 public override void VerifyRenderingInServerForm(Control control) { }

还有由于是文件操作所以要引入名称空间IO和Text

后台代码：

using System; using System.Data; using System.Configuration; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; using System.Data.SqlClient; using System.Drawing; using System.IO; using System.Text; public partial class Default7 : System.Web.UI.Page { SqlConnection sqlcon; SqlCommand sqlcom; string strCon = "Data Source=(local);Database=北风贸易;Uid=sa;Pwd=sa"; protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { bind(); } } public void bind() { string sqlstr = "select top 5 * from 飞狐工作室"; sqlcon = new SqlConnection(strCon); SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon); DataSet myds = new DataSet(); sqlcon.Open(); myda.Fill(myds, "飞狐工作室"); GridView1.DataSource = myds; GridView1.DataKeyNames = new string[] { "身份证号码" }; GridView1.DataBind(); sqlcon.Close(); } protected void Button1_Click(object sender, EventArgs e) { Export("application/ms-excel", "学生成绩报表.xls"); } private void Export(string FileType, string FileName) { Response.Charset = "GB2312"; Response.ContentEncoding = System.Text.Encoding.UTF7; Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(FileName, Encoding.UTF8).ToString()); Response.ContentType = FileType; this.EnableViewState = false; StringWriter tw = new StringWriter(); HtmlTextWriter hw = new HtmlTextWriter(tw); GridView1.RenderControl(hw); Response.Write(tw.ToString()); Response.End(); } public override void VerifyRenderingInServerForm(Control control) { } }

前台：

<asp:GridView ID="GridView1" runat="server" CellPadding="3" BackColor="White" BorderColor="#CCCCCC" Border BorderWidth="1px" Font-Size="12px" > <FooterStyle BackColor="White" ForeColor="#000066" /> <Columns> <asp:BoundField DataField="身份证号码" HeaderText="编号" ReadOnly="True" /> <asp:BoundField DataField="姓名" HeaderText="姓名" /> <asp:BoundField DataField="出生日期" HeaderText="邮政编码" /> <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" /> <asp:BoundField DataField="邮政编码" HeaderText="邮政编码" /> <asp:BoundField DataField="起薪" HeaderText="起薪" /> </Columns> <RowStyle ForeColor="#000066" /> <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" /> <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" CssClass="ms-formlabel DataGridFixedHeader"/> <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" /> </asp:GridView> <asp:Button ID="Button1" runat="server" Text="导出" />

读取Excel数据的代码：这个很简单的

private DataSet CreateDataSource() { string strCon; strCon = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + Server.MapPath("excel.xls") + "; Extended Properties=Excel 8.0;"; OleDbConnection olecon = new OleDbConnection(strCon); OleDbDataAdapter myda = new OleDbDataAdapter("SELECT * FROM [Sheet1$]", strCon); DataSet myds = new DataSet(); myda.Fill(myds); return myds; } protected void Button1_Click(object sender, EventArgs e) { GridView1.DataSource = CreateDataSource(); GridView1.DataBind(); }

为大家附3个精彩的专题：

ASP.NET控件使用手册

ASP.NET数据绑定控件使用汇总

ASP.NET控件使用汇总

以上就是关于asp.net中gridview控件的多种使用方法，很全面，目的就是想让亲们玩转gridview控件，希望大家喜欢小编整理的这两篇文章。