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Problem with updating grid rating

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C O
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C O asked on 13 May 2010, 08:13 PM
The code is basicly from the demo example, however, update results in error: ...object reference not set to an instance of an object. any help is appreciated.

VB:
If e.CommandName = "UpdateRating" Then  
                Dim item As GridEditableItem = TryCast(e.Item, GridEditableItem)  
                Dim values As New Hashtable()  
                item.ExtractValues(values)  
                values("ChangeRequestID") = item.GetDataKeyValue("ChangeRequestID")  
                values("Completed") = Int16.Parse(values("Completed"))  
                values("Accepted") = Int16.Parse(values("Accepted"))  
                values("Reviewed") = Int16.Parse(values("Reviewed"))  
                  
                For Each entry As DictionaryEntry In values  
                    SqlDataSource1.UpdateParameters(entry.Key.ToString()).DefaultValue = entry.Value.ToString()  
                Next  
                SqlDataSource1.Update()  
            End If 

And the grid:
<telerik:RadGrid ID="RadGrid1" runat="server" GridLines="None" AllowPaging="True" AllowSorting="True" AutoGenerateColumns="False" ShowStatusBar="True" 
              AllowAutomaticInserts="True" AllowAutomaticUpdates="True" OnItemCommand="RadGrid1_ItemCommand" Height="900px" PageSize="25" Skin="Black" DataSourceID="SqlDataSource1">  
            <PagerStyle Mode="Slider" /> 
 
            <MasterTableView CommandItemDisplay="Top" DataKeyNames="ChangeRequestID" AllowMultiColumnSorting="True" DataSourceID="SqlDataSource1" AllowFilteringByColumn="True">  
                <Columns> 
                    <telerik:GridButtonColumn ButtonType="ImageButton" ImageUrl="Images/Update.gif" CommandName="UpdateRating" UniqueName="UpdateColumn" HeaderText="Update" /> 
                    <telerik:GridEditCommandColumn ButtonType="ImageButton" EditImageUrl="Images/Edit.gif" HeaderText="Edit" /> 
                    <telerik:GridRatingColumn DataField="Accepted" UniqueName="Accepted" Precision="Item" ReadOnly="False" ItemCount="1" HeaderText="Accepted" AllowRatingInViewMode="true" /> 
                    <telerik:GridRatingColumn Datafield="Reviewed" UniqueName="Reviewed" Precision="Item" ReadOnly="False" ItemCount="1" HeaderText="Reviewed" AllowRatingInViewMode="true" /> 
                    <telerik:GridRatingColumn Datafield="Completed" UniqueName="Completed" Precision="Item" ReadOnly="False" ItemCount="1" HeaderText="Completed" AllowRatingInViewMode="true" /> 
                    <telerik:GridRatingColumn Datafield="Priority" UniqueName="Priority" Precision="Item" ReadOnly="false" ItemCount="5" HeaderText="Priority" AllowRatingInViewMode="false" /> 
                    <telerik:GridBoundColumn DataField="ChangeRequestID" UniqueName="ChangeRequestID" HeaderText="ID" Visible="false" /> 
                </Columns> 
                <EditFormSettings EditFormType="Template">  
                <EditColumn UniqueName="EditCommandColumn1" /> 
                    <FormTemplate> 
.... 

And the datasource:
<asp:SqlDataSource ID="SqlDataSource1" DataSourceMode="DataSet" runat="server" ConnectionString="<%$ ConnectionStrings:hldbConnectionString %>" 
             
              InsertCommand="INSERT INTO ChangeRequestTracker(Accepted, Completed, Reviewed, Priority) VALUES (0, 0, 0, @Priority)"   
                                          
              SelectCommand="SELECT * FROM ChangeRequestTracker ORDER BY ChangeRequestID DESC" 
                 
              UpdateCommand="UPDATE ChangeRequestTracker SET Priority=@Priority, Accepted=@Accepted, Reviewed=@Reviewed, Completed=@Completed  WHERE ChangeRequestID = @ChangeRequestID">  
              <UpdateParameters> 
                  <asp:Parameter Name="ChangeRequestID"/>  
                  <asp:Parameter Name="Priority"/>  
                  <asp:Parameter Name="Accepted"/>  
                  <asp:Parameter Name="Reviewed"/>  
                  <asp:Parameter Name="Completed"/>  
              </UpdateParameters> 
              <InsertParameters> 
                  <asp:Parameter Name="Priority"/>  
                  <asp:Parameter Name="Accepted"/>  
                  <asp:Parameter Name="Reviewed"/>  
                  <asp:Parameter Name="Completed"/>  
              </InsertParameters> 
          </asp:SqlDataSource> 

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Iana Tsolova
Telerik team
answered on 14 May 2010, 02:20 PM
Hello C O,

Could you please specify on which line of the code is the mentioned error thrown?

All the best,
Iana
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C O
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answered on 14 May 2010, 03:57 PM
hi, The error is on line 6.  thanks.
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Iana Tsolova
Telerik team
answered on 17 May 2010, 11:17 AM
Hello C O,

From the provided information I assume that for some reason the "Completed" new value is not extracted. Does the error occur when the grid item is in edit mode or does it persist if auto-generated edit forms are used instead of templated?

Sincerely yours,
Iana
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C O
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answered on 17 May 2010, 03:03 PM
I modified the grid to use auto generated forms and the same error appears for Insert, Update, and the rating update. 
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Iana Tsolova
Telerik team
answered on 17 May 2010, 03:50 PM
Hello C O,

Could you please open a formal support ticket and send us a runnable sample there? We will debug it locally to find a proper resolution for your case.

Looking forward your reply,
Iana
the Telerik team

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