Change string to Date format using C# and VB.Net in ASP.Net

Hi varun.p,

Check this sample.

HTML

<asp:TextBox ID="txtDate" runat="server" />
<asp:Button ID="btnSubmit" Text="Submit" runat="server" OnClick="OnSubmit" /><br />
<asp:Label ID="lblDate" Text="" runat="server" />

Code

C#

protected void OnSubmit(object sender, EventArgs e)
{
    DateTime date = Convert.ToDateTime(txtDate.Text.Trim());
    string month = date.ToString("MMMM");
    string year = date.ToString("yyyy");
    ClientScript.RegisterStartupScript(this.GetType(), "", "alert('Month : " + month + " \\nYear : " + year + "')", true);
    lblDate.Text = date.ToString("MMMM-yyyy");
}

VB.Net

Protected Sub OnSubmit(ByVal sender As Object, ByVal e As EventArgs)
    Dim date As DateTime = Convert.ToDateTime(txtDate.Text.Trim())
    Dim month As String = date.ToString("MMMM")
    Dim year As String = date.ToString("yyyy")
    ClientScript.RegisterStartupScript(Me.GetType(), "", "alert('Month : " & month & " \nYear : " & year & "')", True)
    lblDate.Text = date.ToString("MMMM-yyyy")
End Sub

Screenshot