[Solved] Clearing Grid and binding new resutls?

[James O'Brien]

I having an issue rebinding and/or clearing the old results in the grid. The code below populates RadGridType. On load returnCourseName return 63 records (confirmed). Then the user selects something on RadGridProduct and this function is launched again, this time returnCourseName returns 21 records (confirmed) but the 63 records are still in RadGridType. All I want to do is clear the grid and send it new results. That all!!!

<telerik:RadGrid
                                        ID="RadGridType"
                                        runat="server"
                                        AutoGenerateColumns="False"
                                        GridLines="None"
                                        AllowMultiRowSelection="True"
                                        ShowHeader="False"
                                        BorderStyle="None"
                                        Skin="Web20"
                                        ForeColor="#3399CC"
                                        Font-Bold="False"
                                        Font-Italic="False"
                                        Font-Names="Verdana"
                                        Font-Overline="False"
                                        Font-Strikeout="False"
                                        Font-Underline="False">
                                        <AlternatingItemStyle
                                            Font-Bold="False"
                                            Font-Italic="False"
                                            Font-Overline="False"
                                            Font-Strikeout="False"
                                            Font-Underline="False"
                                            ForeColor="#3399CC"
                                            Wrap="True" />
                                        <ItemStyle
                                            Font-Bold="False"
                                            Font-Italic="False"
                                            Font-Overline="False"
                                            Font-Strikeout="False"
                                            Font-Underline="False"
                                            ForeColor="#3399CC"
                                            Wrap="True" />
                                        <MasterTableView
                                            Font-Bold="False"
                                            Font-Italic="False"
                                            Font-Names="Verdana"
                                            Font-Overline="False"
                                            Font-Strikeout="False"
                                            Font-Underline="False"
                                            Font-Size="11px">
                                        <RowIndicatorColumn>
                                        <HeaderStyle Width="20px"></HeaderStyle>
                                        </RowIndicatorColumn>
                                        <ExpandCollapseColumn>
                                        <HeaderStyle Width="20px"></HeaderStyle>
                                        </ExpandCollapseColumn>
                                            <Columns>
                                                <telerik:GridClientSelectColumn Display="False" UniqueName="columnBlank">
                                                </telerik:GridClientSelectColumn>
                                                <telerik:GridBoundColumn
                                                    DataField="CourseName"
                                                    UniqueName="colCourseNameSelect"
                                                    HeaderButtonType="None">
                                                </telerik:GridBoundColumn>
                                            </Columns>
                                            <ItemStyle Font-Bold="False" Font-Italic="False" Font-Overline="False" Font-Strikeout="False" Font-Underline="False" ForeColor="#3399CC" Wrap="True" />
                                            <AlternatingItemStyle Font-Bold="False" Font-Italic="False" Font-Overline="False" Font-Strikeout="False" Font-Underline="False" ForeColor="#3399CC" Wrap="True" />
                                            <EditItemStyle Font-Bold="False" Font-Italic="False" Font-Overline="False" Font-Strikeout="False" Font-Underline="False" Wrap="True" BackColor="Black" ForeColor="White" />
                                        </MasterTableView>
                                        <SelectedItemStyle Font-Bold="True" Font-Italic="False" Font-Overline="False" Font-Strikeout="False" Font-Underline="False" Wrap="True" ForeColor="Maroon" BackColor="Silver" />
                                        <ClientSettings EnableRowHoverStyle="False">
                                            <Selecting AllowRowSelect="True" />
                                        </ClientSettings>
                                    </telerik:RadGrid>

public void returnCourseName(string strLocation)
    {
        GridItemCollection GDC = RadGridProduct.SelectedItems;
        RadGridType.DataSource = new List<string>(0);
        RadGridType.DataBind();
        RadGridType.DataSource = clsTraining.returnCourseName(strLocation, GDC);
        RadGridType.DataBind();
    }

[Schlurk]

The code seems OK to me, we would probably need more information in terms of your implementation of this control and other controls on the page.