How to display data result from database in C#

I am trying to make a website in C# and .accdb database using Visual Studio 2010 my .accdb database has username and score and I want to display the user that has credit more than 0 to the Default.aspx

So I created a button and a textbox.

<div>
<asp:Button ID="CreditSearch" runat="server" Text="Credit" onclick="btnCreditSearch_Click"  />
 </div>

and the function for btnCreditSearch_Click is:

protected void btnCreditSearch_Click(object sender, EventArgs e)
{
    CreditSearch();
}

private void CreditSearch()
{
    string users;
    users = Process.UserCreditSearch();
    string A = users.ToString();
    T开发者_运维百科extBox1.Text(A);
}

and my Process.UserCreditSearch() is:

   public static string UserCreditSearch()
{
    string query = "SELECT srusername FROM usertb WHERE credit > 0 ";
    return query;

}

but then it is not working. for the credit search function, it says "Non invocable member' System.UI.Webcontrol.TextBox.Text' can not be use like a method

I hope somebody knows what I done wrong and thanks

.Text is a Property

TextBox1.Text= A;