Hierarchical Grid with HeaderCheckbox

[florian]

Hello, 

I think I have found a bug in the radgridview behavior:

My radgridview is structured by :

- A Tree with a self reference hierarchy.

- Child templates for some elements in the tree

My code looks like this :

radGridView.Relations.AddSelfReference(radGridView.MasterTemplate, "CategoryId", "ParentCategoryId");

GridViewTemplate childTemplate = CreateChildTemplate();
GridViewRelation relation = new GridViewRelation(this.radGridView.MasterTemplate, childTemplate);
relation.ChildColumnNames.Add("T_RIGHT");
radGridView.Relations.Add(relation);

 

For the CreateChildTemplate(), it looks like this :

GridViewTemplate childTemplate = new GridViewTemplate();
childTemplate.AutoGenerateColumns = false;
radGridView.Templates.Add(childTemplate);

GridViewDecimalColumn decColumn = new GridViewDecimalColumn
{
    Name = "RightId",
    HeaderText = "Right Id",
    FieldName = "RGT_ID",
    IsVisible = false,
    MinWidth = 100
};
childTemplate.Columns.Add(decColumn);

GridViewTextBoxColumn tbxColumn = new GridViewTextBoxColumn
{
    Name = "RightName",
    HeaderText = "Right Name",
    FieldName = "RGT_NAME",
    ReadOnly = true,
    MinWidth = 100
};
childTemplate.Columns.Add(tbxColumn);

GridViewCheckBoxColumn chkxColumn = new GridViewCheckBoxColumn
{
    Name = "Checkbox",
    FieldName = "HasAccess",
};
childTemplate.Columns.Add(chkxColumn);

 

This tree works fine, as expected.

But when I try to implement the EnableHeaderCheckBox feature, I have an error

'System.NullReferenceException' dans Telerik.WinControls.GridView.dll

 

But the header checkbox works fine if I comment the line which enables the self referencing :

//radGridView.Relations.AddSelfReference(radGridView.MasterTemplate, "CategoryId", "ParentCategoryId");

 

Can you reproduce the problem ? What can I do with this behavior ?

Thanks in advance for your help.

 

[Dess | Tech Support Engineer, Principal]

Hello, Florian,

Thank you for writing.  

I have logged it in our feedback portal. You can track its progress, subscribe for status changes and add your comments on the following link - feedback item.

I have also updated your Telerik points.

Currently, the possible solution that I can suggest is to use a custom GridCheckBoxHeaderCellElement which is demonstrated in the referred feedback item.

I hope this information helps. Should you have further questions I would be glad to help.

 Regards,
Dess
Progress Telerik

[florian]

Thank you so much for your feedback and your workaround