Concatenate DataSourceID string and variable

Question

User1878523065 posted

Hi,

What is the correct syntax to concatenate a DataSourceID string and a variable?

If MyVariable = A  I want to have MyAccessDataSourceA

<asp:DetailsView ID="DetailsView1" DataSourceID="MyAccessDataSource" & MyVariable>

Thanks.

Answer 1

User-1542018982 posted

Hi,

I think to set it in Code-behind Page_Init event, and the code is like below:

DetailsView1.DataSourceID = "MyAccessDataSource" & MyVariable

Hope it helps.

Answer 2

User1878523065 posted

Actualy I wanted to format my string directly because I'm having an issue with my DataLists' strings declaration. I do nicely with DetailsView and GridView, but not so with DataList.

Succes: DetailsView1.DataSourceID = "MyString"
Succes: GridView1.DataSourceID = "MyString"
Fail: DataList1.DataSourceID = "MyString"

What's wrong with this DataList that's working with DetailsView and GridView ?

Answer 3

User-1542018982 posted

Hi,

As I know, it shouldn't be a problem for DataList.

Please explain more how DataList is not working. Any exception is thrown?

Answer 4

User1878523065 posted

My code is on the page itself, between <asp:Content></asp:Content>

<% DataList1.DataSourceID = "MyString" %>

<asp:DataList ID="DataList1" runat="server">
  <ItemTemplate>
       <asp:Image ID="Image1" runat="server" ImageUrl='<%# Eval("Logo_Receveurs") %>' />
       <br />
       <asp:Label ID="ButsReceveurs" runat="server"
              Text='<%# Eval("ButsPourMatchReceveurs") %>'>
        </asp:Label>
        <br />
        <asp:Label ID="PointsReceveurs" runat="server" Text='<%# Eval("PointsPourMatchReceveurs") %>' >
        </asp:Label>
  </ItemTemplate>
</asp:DataList>

No exception, the DataList simply doesn't display. Not because of a Null value. A Response.Write test shows the correct string.

Answer 5

User3866881 posted

Hello：）

Just to write the binding code at Page_Load event, like this:

  protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                DataList1.DataSourceID = "SqlDataSource1";
            }
        }