How to Clear DropDownList Selected Item in ASP.Net C#

DropDownList Clear

DropDownList All Item Values Remove

C# Coding

  protected void Button1_Click(object sender, EventArgs e)
        DropDownList1.SelectedIndex = -1;


First - Add DropDownList to Webform & Insert Item Values(country) 

Next - Clear Button - Double Click Write Coding


Next - Press F5 Run the Program

Select One Country

After  - Click the  Button  Index Go to -1  Display First Index (select country)  Display


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