DevExpress中GridControl列轉義的實現方法

2020-01-24 02:35:00

字體：大中小

來源：轉載

供稿：網友

在一些項目的實際開發過程中，我們有時候需要對GridControl中列值進行轉義，譬如1轉義成“完成”等等，一般在諸如CustomColumnDisplayText事件中能夠輕松完成，為了提高代碼復用性，所以需要對CustomColumnDisplayText進行包裝。具體方法如下：

主要功能代碼如下：

/// <summary>/// CustomColumnDisplayText Helper/// </summary>/// <param name="girdview">GridView</param>/// <param name="fieldNameHandler">委托</param>/// <param name="dispalyTextHandler">展現文字</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">展現文字</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;  }}

代碼使用方法如下：

private void gvLampConfig_CustomColumnDisplayText(object sender, CustomColumnDisplayTextEventArgs e){  gvLampConfig.CusColDisplayTextHelper(name => name.Equals("LampViDirection"), value => value.ToInt(1) == 1 ? "正向" : "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 "鈉燈";  if (_type == 2) return "LED燈";  if (_type == 3) return "無極燈";  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 "關閉但不刪除";  if (_type == 1) return "啟用";  if (_type == 2) return "刪除";  return "--";}

代碼運行效果如下所示：