Enable or Disable ASP.Net TextBox and Button based on Session value using C# and VB.Net

Hi Mehram,

You need to check the Session value whether its zero or not.

Based on the condition, set the TextBox and Button Enabled property to true or false.

Refer below sample.

HTML

<asp:TextBox ID="txtName" runat="server" />
<asp:Button ID="btnSave" Text="Save" runat="server" />

Code

C#

protected void Page_Load(object sender, EventArgs e)
{
    if (!this.IsPostBack)
    {
        Session["IsActiveYear"] = "0";
        EnableDisableControls();
    }
}

private void EnableDisableControls()
{
    txtName.Enabled = Session["IsActiveYear"].ToString() != "0";
    btnSave.Enabled = Session["IsActiveYear"].ToString() != "0";
}

VB.Net

Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
    If Not Me.IsPostBack Then
        Session("IsActiveYear") = "0"
        EnableDisableControls()
    End If
End Sub

Private Sub EnableDisableControls()
    txtName.Enabled = Session("IsActiveYear").ToString() <> "0"
    btnSave.Enabled = Session("IsActiveYear").ToString() <> "0"
End Sub

Screenshot