You can put the focus on the following types of ASP.NET controls: Button, LinkButton, and ImageButton controls, CheckBox control, DropDownList control, FileUpload control, HyperLink control, ListBox control, RadioButton control, TextBox control.The following C# code example shows how to set the focus on the control with the ID TextBox1:protected void Page_Load(object sender, EventArgs e) {     TextBox1.Focus(); }

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