New to Asp.Net Need connecting string and Add 2 values

Hi, If you are using ASP.NET Web Form then please add 3 textbox and a button. Now paste the below code in .aspx.cs button click event and put your DB connection string. This is how, you can add 3 values in a table.

protected void btnInsert_Click(object sender, EventArgs e)  
{  
var cnnString = "Your DB ConnectionString";  
var cmd = "insert into TableName values(@Name,@Address,@Phone)";  
using (SqlConnection cnn = new SqlConnection(cnnString))  
{  
    using (SqlCommand cmd = new SqlCommand(cmd, cnn))  
    {  
        cmd.Parameters.AddWithValue("@Name",txtName.Text);  
        cmd.Parameters.AddWithValue("@Address",txtAddress.Text);  
        cmd.Parameters.AddWithValue("@Phone",txtPhone.Text);  
  
        cnn.Open();  
        cmd.ExecuteNonQuery();  
    }  
}  
}