Set Default Date for TextBox on Page Load using C# and VB.Net in ASP.Net

Hi akhter,

Check this example. Now please take its reference and correct your code.

HTML

Entry Date :<asp:TextBox ID="txtbpentrydate" runat="server" ReadOnly="false"></asp:TextBox>

Code

C#

protected void Page_Load(object sender, EventArgs e)
{
    txtbpentrydate.Text = Convert.ToDateTime("05/02/2020").ToString("yyyy-dd-MM");
}

VB.Net

Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
    txtbpentrydate.Text = Convert.ToDateTime("05/02/2020").ToString("yyyy-dd-MM")
End Sub

Screenshot