[Solved] Selecting and deselecting no working as normal

[Pierre]

Hi,

I use same sample as found in demo webside and have some troubles.
If i select the header checkbox items are correctly selected. If deselect this checkbox no action is performed in selected items.
I can't use the suggested ItemCreatedEvent lauching the ItemPreRender because in this case when select, only my last item is selected no others and deselecting from header checkbox is not working.

grid :OnNeedDataSource="PlanGrid_NeedDataSource"  OnItemCreated="PlanGrid_ItemCreated"OnUpdateCommand="PlanGrid_UpdateCommand"
Template

 <telerik:GridTemplateColumn UniqueName="CheckBoxTemplateColumn">
                                                    <HeaderTemplate>
                                                     <asp:CheckBox id="headerChkbox" OnCheckedChanged="ToggleSelectedState" AutoPostBack="True" runat="server"></asp:CheckBox>
                                                    </HeaderTemplate>
                                                    <ItemTemplate>
                                                        <asp:CheckBox id="CheckBox1" OnCheckedChanged="ToggleRowSelection" AutoPostBack="True" runat="server"></asp:CheckBox>
                                                    </ItemTemplate>
                                            </telerik:GridTemplateColumn>

protected void PlanGrid_ItemPreRender(object sender, EventArgs e)
    {
        ((sender as GridDataItem)["CheckBoxTemplateColumn"].FindControl("CheckBox1") as CheckBox).Checked = (sender as GridDataItem).Selected;

    }
    protected void ToggleRowSelection(object sender, EventArgs e)
    {
        ((sender as CheckBox).Parent.Parent as GridItem).Selected = (sender as CheckBox).Checked;
    }
    protected void ToggleSelectedState(object sender, EventArgs e)
    {
        if ((sender as CheckBox).Checked == true)
        {
            foreach (GridDataItem dataItem in PlanGrid.MasterTableView.Items)
            {
                (dataItem.FindControl("CheckBox1") as CheckBox).Checked = true;
                dataItem.Selected = true;
            }
        }
        else
        {
            foreach (GridDataItem dataItem in PlanGrid.MasterTableView.Items)
            {
                (dataItem.FindControl("CheckBox1") as CheckBox).Checked = false;
                dataItem.Selected = false;
            }
        }
    }

protected void PlanGrid_ItemCreated(object sender, Telerik.Web.UI.GridItemEventArgs e)
    {
        // this will make the textbox for customer with Week ALLS not editable
        if (e.Item is GridEditableItem && e.Item.IsInEditMode)
        {
            if (e.Item.OwnerTableView.DataKeyValues[e.Item.ItemIndex]["PriceUs"] != null)
            {
                (e.Item as GridEditableItem)["PriceUs"].Enabled = false;
            }
            if (e.Item.OwnerTableView.DataKeyValues[e.Item.ItemIndex]["Week"] != null)
            {
                (e.Item as GridEditableItem)["Week"].Enabled = false;
            }
        }
        //if (e.Item is GridDataItem)
        //{
        //    e.Item.PreRender += new EventHandler(PlanGrid_ItemPreRender);
        //}
        //}
    }

u advice.
regards.

 

[Veli]

Hello Pierre,

You can actually try an alternative approach that is even easier. Attached is a sample page that demonstrates this. Let me know how it works for you.

Greetings,
Veli
the Telerik team

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