SPDataSource for asp gridView returns nothing?

Question

I'm binding my SPDataSource to an ASP:DataGrid but it returns empty gridview not filled. Here's my aspx file

<SharePoint:SPDataSource runat="server" ID="SPTypes" DataSourceMode="ListItem" UseInternalName="true"> 
</SharePoint:SPDataSource> 
<asp:gridView ID="GV" runat="server" DataKeyNames="Title"  AutoGenerateColumns="False" AllowPaging="true" >
    <columns>
        <asp:boundfield DataField="Title" HeaderText="Title">
        </asp:boundfield>
    </columns>
</asp:gridView>

and here's the code behind

SPList corrList = getSelectedList("Correspondance");
SPWeb web = SPContext.Current.Web;
SPList taskList = web.Lists["Tasks"];
SPTypes.List = taskList;
SPTypes.SelectCommand = "<Where><And><Eq><FieldRef Name=\"Title\"/>" +
        "<Value Type=\"Text\">Document interne</Value></Eq><Eq><FieldRef Name=\"Fonction\"/>" +
        "<Value Type=\"Text\">GenerateChrono</Value></Eq></And></Where>";

GV.DataSource = SPTypes;
GV.DataBind();

I checked the query and it returns many items I even tried to put the query this way :

SPTypes.SelectCommand = "<Query><Where><And><Eq><FieldRef Name=\"Title\"/>" +
        "<Value Type=\"Text\">Document interne</Value></Eq><Eq><FieldRef Name=\"Fonction\"/>" +
        "<Value Type=\"Text\">GenerateChrono</Value></Eq></And></Where></Query>";

PS title is the internal name I want to retrieve !

Answer 1

Glolita,

Use SPGridView instead of ASP:GridView...

Here is a nice article: How to use the SPGridView filter together with a SPDataSource

I also noticed in every example in CAML before <Query> they are using <View>, but I don't know if this is really the problem... can you please try that as well

Also,

SPTypes.DataSourceMode="List"

Hope this resolves the issue!