How to Create Watermark TextBox in Silverlight

Make a Watermark TextBox in Silverlight in few steps-

When we make a textbox like to search the content or any other we want to show some text at the start and when user click on that textbox then the text will empty.

Suppose u make a form that contain two textbox for first name and last name. When form load for the user simplicity we have want to show which textbox is for what , so the watermark textbox can help for this.

To make the watermark textbox do the following steps.

1. Create new silverlight project name as TextBoxWatermark
2. In the xaml page add one textbox name as textbox1.
3. Set height and width of the textbox.
4. In the TextBoxWatermark.xaml.cs file go to the constructor and add two events for it name as LostFocus and GotFocus. As like following
   
   private void txtSearch_LostFocus(object sender, RoutedEventArgs e)

   {

   if (string.IsNullOrEmpty(textBox1.Text))

   {

   textBox1.Text = "Search ";

   }

   }

   private void txtSearch_GotFocus(object sender, RoutedEventArgs e)

   {

   textBox1.Text = string.Empty;

   }
   
   When lostfocus - Add the watermark text in the textbox using the .Text property.
   when gotgocus- make the watermark string empty.
   

5. Run the project and see output.
6. Done.