在一些项目的实际开发过程中，我们有时候需要对GridControl中列值进行转义，譬如1转义成“完成”等等，一般在诸如CustomColumnDisplayText事件中能够轻松完成，为了提高代码复用性，所以需要对CustomColumnDisplayText进行包装。具体方法如下：

主要功能代码如下：

/// <summary> /// CustomColumnDisplayText Helper /// </summary> /// <param name="girdview">GridView</param> /// <param name="fieldNameHandler">委托</param> /// <param name="dispalyTextHandler">展现文字</param> /// <param name="e">CustomColumnDisplayTextEventArgs</param> public static void CusColDisplayTextHelper(this GridView girdview, Predicate<string> fieldNameHandler, Func<object, string> dispalyTextHandler, CustomColumnDisplayTextEventArgs e) { if (fieldNameHandler(e.Column.FieldName)) { e.DisplayText = dispalyTextHandler(e.Value); } } /// <summary> /// CustomColumnDisplayText Helper /// </summary> /// <param name="girdview">GridView</param> /// <param name="valueHandler">委托</param> /// <param name="dispalyTextHandler">委托</param> /// <param name="e">CustomColumnDisplayTextEventArgs</param> public static void CusColDisplayTextHelper(this GridView girdview, Func<object, Type, bool> valueHandler, Func<object, string> dispalyTextHandler, CustomColumnDisplayTextEventArgs e) { if (valueHandler(e.Value, e.Value.GetType())) { e.DisplayText = dispalyTextHandler(e.Value); } } /// <summary> ///CustomColumnDisplayText Helper /// </summary> /// <param name="girdview">GridView</param> /// <param name="valueHandler">委托</param> /// <param name="curdispalyText">展现文字</param> /// <param name="e">CustomColumnDisplayTextEventArgs</param> public static void CusColDisplayTextHelper(this GridView girdview, Func<object, Type, bool> valueHandler, string curdispalyText, CustomColumnDisplayTextEventArgs e) { if (valueHandler(e.Value, e.Value.GetType())) { e.DisplayText = curdispalyText; } }

代码使用方法如下：

private void gvLampConfig_CustomColumnDisplayText(object sender, CustomColumnDisplayTextEventArgs e) { gvLampConfig.CusColDisplayTextHelper(name => name.Equals("LampViDirection"), value => value.ToInt(1) == 1 "反向", e); gvLampConfig.CusColDisplayTextHelper(name => name.Equals("LampWorkStatus"), TranLampWorkType, e); gvLampConfig.CusColDisplayTextHelper(name => name.Equals("CTUChNo"), value => string.Format("第{0}回路", value), e); gvLampConfig.CusColDisplayTextHelper(name => name.Equals("LampPhase"), TranLampPhase, e); gvLampConfig.CusColDisplayTextHelper(name => name.Equals("LampDeviceType"), TranLampDeviceType, e); gvLampConfig.CusColDisplayTextHelper(name => name.Equals("LampPower"), value => string.Format("{0} W", value), e); gvLampConfig.CusColDisplayTextHelper(name => name.Equals("LampIntensity"), value => string.Format("{0} %", value), e); gvLampConfig.CusColDisplayTextHelper((value, type) => value.ToInt(-1) == -1 && type == typeof(Int32), "不修改", e); } private string TranLampDeviceType(object type) { int _type = type.ToInt(-1); if (_type == 1) return "钠灯"; if (_type == 2) return "LED灯"; if (_type == 3) return "无极灯"; return "--"; } private string TranLampPhase(object type) { int _type = type.ToInt(-1); if (_type == 0) return "未知"; if (_type == 1) return "A相"; if (_type == 2) return "B相"; if (_type == 3) return "C相"; return "--"; } private string TranLampWorkType(object type) { int _type = type.ToInt(-1); if (_type == 0) return "关闭但不删除"; if (_type == 1) return "启用"; if (_type == 2) return "删除"; return "--"; }

代码运行效果如下所示：