DevExpress中GridControl列转义的实现方法

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 ? "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 "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：