如何在c#代码中添加占位符

本文关键字：添加 占位符 代码 | 更新日期: 2023-09-27 18:05:23

如何在c#代码中添加占位符?我想显示DateTime。现在以我的形式。

<div class="col-md-10">
  @Html.EditorFor(model => model.Date,  new { htmlAttributes = new { @class = "form-control"  } })
  @Html.ValidationMessageFor(model => model.Date, "", new { @class = "text-danger" })
</div>

如何在c#代码中添加占位符

你试过了吗- 

  @Html.EditorFor(model => model.Date, new { placeholder =  DateTime.Now.ToString("MM/dd/yyyy")})

/** Here is how I did it in my code. I had a richtexBox5 that I needed to add QTY placeholder. So what did was, inside public form i did the following */
  public Form1()
        {
            InitializeComponent();
         richTextBox5.Text = "QTY";// set text you want to show
         if (richTextBox5.Text == "QTY")
            {
             richTextBox5.ForeColor = Color.LightGray;// set color
           }
        }
/**now make this function which will listen to mouse click  in wherever part you want*/
 private void richTextBox5_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
        {           
            if(richTextBox5.Text=="QTY") // check what is in that textbox
            {
                richTextBox5.Text = "";// set it to null 
                richTextBox5.ForeColor = Color.Black;// change color
            }      
        }
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