textbox水印

显示全部楼层 · 2016-10-28 18:11:48

又来麻烦大家了，想问下textbox水印怎么做，是不是有专门的程序设计，我利用了光标进入、离开用户框及密码框的事件实现的，但问题来了，我在这两个控件点了多次后，密码框不在显示“请输入密码：”，而是显示“***”，这不是我想要的效果，还请大家帮忙看下哪里出错了，谢谢你了

#region 默认显示输入账号及密码提示
      private void txb_Psd_Enter(object sender, EventArgs e)
      {
         if(txb_Psd.Text=="请输入密码：")
         {
            txb_Psd.Text = "";
            txb_Psd.ForeColor=Color.Black;
               txb_Psd.PasswordChar = Convert.ToChar("*");
         }

      }

      private void txb_Psd_Leave(object sender, EventArgs e)
      {

         if (txb_Psd.Text == "")
         {
            txb_Psd.Text = "请输入密码：";
            txb_Psd.ForeColor = Color.DarkGray;

         }
      }

      private void cmb_Account_Enter(object sender, EventArgs e)
      {
         if(cmb_Account.Text=="请输入账号：")
         {
            cmb_Account.Text = "";
            cmb_Account.ForeColor = Color.Black;
         }
      }

      private void cmb_Account_Leave(object sender, EventArgs e)
      {
         if (cmb_Account.Text == "")
         {
            cmb_Account.Text = "请输入账号：";
            cmb_Account.ForeColor = Color.DarkGray;
         }

      }
#endregion

ibcadmin · 2016-10-28 23:24:02

  private void textBox1_Enter(object sender, EventArgs e)
      {
         if (this.textBox1.Text == "请输入密码")
         {
            this.textBox1.PasswordChar = '*';
            this.textBox1.Text = "";

         }
      }

      private void textBox1_Leave(object sender, EventArgs e)
      {
         if (this.textBox1.Text == "")
         {
            this.textBox1.Text = "请输入密码";
            this.textBox1.PasswordChar = new char();
         }
      }

要这样写你光设置    txb_Psd.PasswordChar = Convert.ToChar("*"); 但是你没设置回去。
你要用 this.textBox1.PasswordChar = new char(); 把他在设置回去