ASP中继器和数据绑定

Question

I'm having a problem with my asp-repeaters.

I have a link in a gridview, that opens a popup that contains additional information.

<asp:TemplateField HeaderText="Firma Info">
    <ItemTemplate>

        <a href="#" onclick='openWindow("<%# Eval("CompanyID") %>");'>Vis detaljer</a>
    </ItemTemplate>
</asp:TemplateField>  

Here is the javascript:

<script type="text/javascript">
    function openWindow(CompanyID) {
        window.open('CompanyTest.aspx?id=' + CompanyID, 'open_window', ' width=640, height=480, left=0, top=0');

    }
</script>

For the repeaters on CompanyTest (the popup), I have used the code from the following site: http://atul-dhiman.blogspot.dk/2011/06/aspnet-using-c-repeater-control.html because I needed the edit-functionality.

Most notably, is the source to get the data:

public void Show_Data()
{
    SqlDataAdapter adp = new SqlDataAdapter("select * from Company", con);
    DataSet ds = new DataSet();
    adp.Fill(ds);
    Repeater1.DataSource = ds;
    Repeater1.DataBind();
}

That just returns all the data I have, instead of just returning the data based on the CompanyID in the popup-window.

I have tried to replacing it with

CompanyDataContext db = new CompanyDataContext();
int id = Convert.ToInt32(Request.QueryString["CompanyID"]);


Repeater1.DataSource = db.Companies.Where(x => x.CompanyID == id);
Repeater1.DataBind();

But then my repeaters doesnt show anything.

Where does it go wrong?

Answer 1

As I understand your code, in your page you use the following link with a query parameter named id :

CompanyTest.aspx?id=123

But in your code, you use the name CompanyId :

int id = Convert.ToInt32(Request.QueryString["CompanyID"]);

So I think changing your code to

int id = Convert.ToInt32(Request.QueryString["id"]);

should help.

---

If you want to solve the problem based on the SqlDataAdapter, you can use the following code:

public void Show_Data()
{
    int id = Convert.ToInt32(Request.QueryString["id"]);
    using (var cmd = con.CreateCommand())
    {
        cmd.CommandText = "select * from Company where CompanyId = @id"
        cmd.Parameters.AddWithValue("@id", id);
        SqlDataAdapter adp = new SqlDataAdapter(cmd);
        DataSet ds = new DataSet();
        adp.Fill(ds);
        Repeater1.DataSource = ds;
        Repeater1.DataBind();
    }
}