如何使用GridView实现IF语句

Question

I am working on my first web project and I need help adding IF logic when using GridView. I have a page (CustomerListPage) that has a GridView item that displays a list of customers(rows) that can be clicked. Once the customer is clicked, the user is redirected to a page called "CustomerUsagePage" which shows the most recent record of this customer. This is what my GridView code looks like for my CustomerListPage:

 if (GridView1.SelectedRow.RowIndex == 0)
   {
       //string selectedUser = GridView1.SelectedRow.Cells[0].ToString();
       Response.Redirect("CustomerUsagePage.aspx?Customer_Name=" );
       BindGridview();
   }

The code for my CustomerUsagePage looks like this:

private void BindControlvalues()
{

    con.Open();
    SqlCommand cmd = new SqlCommand("select * from dbo.CustomerTable", con);
    SqlDataAdapter da = new SqlDataAdapter(cmd);
    con.Close();
    DataSet ds = new DataSet();
    da.Fill(ds);
    Label4.Text = ds.Tables[0].Rows[0][1].ToString();
    Label1.Text = ds.Tables[0].Rows[0][0].ToString();
    Label2.Text = ds.Tables[0].Rows[0][3].ToString();
    Label3.Text = ds.Tables[0].Rows[0][4].ToString();
}

My problem is that I can only add IF logic the page where my GridView is located. I would like to click on a customer and have his data appear on my CustomerUsagePage with an if statement. Is it possible? I know I can do this by adding a page per customer but I dont want to go down that route, it seems to tedious. Does anyone have any suggestions?

Answer 1

You can use GridView-FormView (Master/Detail) Control

Link : http://www.codeproject.com/Articles/16780/GridView-FormView-Master-Detail-Control .

Or you can use classic behavior with ItemCommand event

void GridView_RowCommand(Object sender, GridViewCommandEventArgs e)
{
    if(e.CommandName=="Add")
    {
      int index = Convert.ToInt32(e.CommandArgument);

      GridViewRow row = CustomersGridView.Rows[index];

      .....//Adjust your Response
    }
}