[Solved] Group Header cells are moved after horizontal scrolling

[Geoff Ballard]

Hi

I have implemented some custom code (which came from elsewhere on the site) as I want the data in the headers to appear over the relevant column.  I get a problem when using the Frozen columns feature in that after horizontally scrolling to the right and then back to the left the contents of the columns shifts to the right.  I've posted a couple of screenshots below.  I can see that a colspan is added to the first column in the header row as the view is scrolled back.  Anyone seen this before? 

Versions are : asp.net 4.0, Windows 7, I.E. 8.0.7601.17514, RadGrid 2012.3.1308.40.

Thanks

Before


After


Code for setting up the group header:

protected void RadGrid_ItemCreated(object sender, GridItemEventArgs e)
    {
        if (e.Item is GridGroupHeaderItem)
        {
            (e.Item as GridGroupHeaderItem).DataCell.Visible = false;
            e.Item.PreRender += new EventHandler(Item_PreRender);
        }
    }

    void Item_PreRender(object sender, EventArgs e)
    {
        GridGroupHeaderItem groupHeader = sender as GridGroupHeaderItem;

        if (groupHeader != null)
        {
            for (int i = 3; i < groupHeader.OwnerTableView.RenderColumns.Length; i++)
            {
                if (groupHeader.OwnerTableView.RenderColumns[i].UniqueName == "ColumnOne")
                {
                    groupHeader.Cells[i - 1].Text = string.Format("<nobr>{0}</nobr>", "One");
                }
                else if (groupHeader.OwnerTableView.RenderColumns[i].UniqueName == "ColumnTwo")
                {
                    groupHeader.Cells[i - 1].Text = "Two";
                }
                else if (groupHeader.OwnerTableView.RenderColumns[i].UniqueName == "ColumnThree")
                {
                    groupHeader.Cells[i - 1].Text = "Three";
                }
                else if (groupHeader.OwnerTableView.RenderColumns[i].UniqueName == "ColumnFour")
                {
                    groupHeader.Cells[i - 1].Text = "Four";
                }
                else if (groupHeader.OwnerTableView.RenderColumns[i].UniqueName == "ColumnFive")
                {
                    groupHeader.Cells[i - 1].Text = "Five";
                }
                else if (groupHeader.OwnerTableView.RenderColumns[i].UniqueName == "ColumnSix")
                {
                    groupHeader.Cells[i - 1].Text = "Six";
                }
                else if (groupHeader.OwnerTableView.RenderColumns[i].UniqueName == "ColumnSeven")
                {
                    groupHeader.Cells[i - 1].Text = "Seven";
                }
                else if (groupHeader.OwnerTableView.RenderColumns[i].UniqueName == "ColumnEight")
                {
                    groupHeader.Cells[i - 1].Text = "Eight";
                }
                else if (groupHeader.OwnerTableView.RenderColumns[i].UniqueName == "ColumnNine")
                {
                    groupHeader.Cells[i - 1].Text = "Nine";
                }
            }
        }

[Angel Petrov]

Hello Geoff,

If I understand the requirements correctly you are trying to implement static headers when using grouping. Is there a reason why you can not use the build in static headers functionality? You can enable static headers using this code snippet:

<ClientSettings >
        <Scrolling UseStaticHeaders="True"  />
        </ClientSettings>

All the best,
Angel Petrov
the Telerik team

[Geoff Ballard]

Hi

I am using that setting.  The reason I don't use the standard functionality is that I need the information to appear in columns above the summed data rather than as a summary.  I have an example of this in a stand-alone project I can send to you if that helps.

Thanks

Stephen

[Angel Petrov]

Hi Stephen,

I have consulted with our developers to see if the approach you are trying to implement is applicable and it appears that this functionality could not be handled by the RadGrid control in its current implementation. Generally this is a custom scenario and is out of our support scope and we can not guarantee that your custom implementation will work in all cases.

All the best,
Angel Petrov
the Telerik team