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Problem with updating grid rating

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Grid

This is a migrated thread and some comments may be shown as answers.

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>

Problem with updating grid rating

5 Answers, 1 is accepted