Pass (Send) value from one page to another in ASP.Net using C#

Dear Indradeo,

You can use Session or QueryString.

Kindly refer below sample.

 HTML

Home

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

Default

<asp:TextBox runat="server" ID="txtEmpId" />

Code

 Home

protected void Save(object sender, EventArgs e)
{
    Session["empid"] = txtId.Text.Trim();
    Response.Redirect("~/Default.aspx?empid=" + txtId.Text.Trim());
}

Default

protected void Page_Load(object sender, EventArgs e)
{
    if (!this.IsPostBack)
    {
        // Using QueryString.
        txtEmpId.Text = Request.QueryString["empid"];
        // Using Session.
        txtEmpId.Text = Session["empid"].ToString();
    }
}

Screenshot