DevExpress实现为TextEdit设置水印文字的方法

设置水印与消除水印

public static void SetWatermark(TextEdit textEdit, string watermark)
{
  textEdit.Properties.NullValuePromptShowForEmptyValue =true;
  textEdit.Properties.NullValuePrompt = watermark;
}
public static void ClearWatermark(TextEdit textEdit)
{
  if(textEdit.Properties.NullValuePromptShowForEmptyValue)
 textEdit.Properties.NullValuePrompt =string.Empty;
}  

测试代码

privatevoid Form1_Load(objectsender, EventArgs e)
{
  SetWatermark(textEdit1, "请输入用户名称....");
  SetWatermark(textEdit2, "请输入用户密码....");
}  

privatevoid simpleButton1_Click(objectsender, EventArgs e)
{
  ClearWatermark(textEdit1);
  ClearWatermark(textEdit2);
}