i am developing a website using asp.net c#. i have one form to get branch name and branch code code is working without any error but when checked database table its adding a blank row insted of data i have given this is my add branch model with proper asp text boxes with id and name

<!-- Add Branch Modal -->
 <div class="modal fade" id="addBranchModal" tabindex="-1" role="dialog" aria-labelledby="addBranchModalLabel" aria-hidden="true">
     <div class="modal-dialog" role="document">
         <div class="modal-content">
             <div class="modal-header">
                 <h5 class="modal-title" id="addBranchModalLabel">Add Branch</h5>
                 <button type="button" class="close" data-dismiss="modal" aria-label="Close">
                     <span aria-hidden="true">×</span>
                 </button>
             </div>
             <div class="modal-body">
                 <!-- Add Branch Form -->
                 <div class="form-group">
                     <label for="branchName">Name:</label>
                     <asp:TextBox id="Brnm" runat="server" type="text" class="form-control" placeholder="Name" requaired="requaired" ></asp:TextBox>
                 </div>
                 <div class="form-group">
                     <label for="branchCode">Code:</label>

                     <asp:TextBox id="Brcd" runat="server" type="text"  class="form-control" placeholder="Code" required="required"></asp:TextBox>

                    
                 </div>
             </div>
             <div class="modal-footer">
                 <button type="button" class="btn btn-secondary" onclick="cancelbtn()" data-dismiss="modal">Cancel</button>
                 <!-- <button type="button" class="btn btn-primary" onclick="saveBranch()">Save</button -->
                 <asp:Button ID="Button2" runat="server" Text="Save" class="btn btn-primary" OnClick="Button2_Click" UseSubmitBehavior="false"/>
             </div>
         </div>
     </div>
 </div>

and this is my backend c# code to get connected with database

protected void Button2_Click(object sender, EventArgs e)
{

    try
    {
        string connectionString = "Data Source=MSI\SQLEXPRESS;Initial Catalog=EKyc;Integrated Security=true"; // Replace with your actual connection string
        using (SqlConnection con = new SqlConnection(connectionString))
        {
            // Open the connection
            con.Open();

            string nm = Brnm.Text.Trim();
            string cd = Brcd.Text.Trim();


            // Check if connection is open
            if (con.State == ConnectionState.Open)
            {
                // Create SQL command with parameters
                SqlCommand cmd = new SqlCommand("insert into Branche (Name, Code) VALUES (@Name,@Code)", con);
                cmd.Parameters.AddWithValue("@Name", Brnm.Text.Trim()); // Assuming Brnm is the TextBox for Name
                cmd.Parameters.AddWithValue("@Code", Brcd.Text.Trim()); // Assuming Brcd is the TextBox for Code

                // Execute the command
                int rowsAffected = cmd.ExecuteNonQuery();

                // Check if insertion was successful
                if (rowsAffected > 0)
                {
                    // Insertion successful, show success message
                    Response.Write("<script>alert('Branch added successfully " + nm + " ');</script>");
                    // Optionally redirect to another page or reload current page
                    // Response.Redirect("BranchList.aspx"); // Example redirect
                }
                else
                {
                    // No rows affected, handle error
                    Response.Write("<script>alert('Error: No rows affected.');</script>");
                }
            }
            else
            {
                // Connection not opened
                Response.Write("<script>alert('Error: Database connection not open.');</script>");
            }
        }
    }
    catch (Exception ex)
    {
        // Handle exceptions
        Response.Write("<script>alert('Error: " + ex.Message + "');</script>");
        // Optionally log the exception for further investigation
        Console.WriteLine("Exception occurred: " + ex.Message);


    }

}

and this is what i have on the top of my admin page
<%@ Page Title="" Language="C#" MasterPageFile="~/Site1.Master" AutoEventWireup="true" CodeBehind="Admin.aspx.cs" Inherits="EKyc.WebForm1" EnableEventValidation="false" EnableViewState="true" %>

can please someone help
this is what i see in database tableenter image description here

why is this not working?? is anything wrong with .Text property of textbox?