Questions on UI for WinForms Forum

1 answer

198 views

Navigating Child rows on multiple templates

I have implemented an export routine using the RadGridView control.

It seemed to be working okay until Q22010.

Here is my structure:

I have a master template with two child templates. I want to read a row from the master and then read all rows from one child template and then read all the rows of the second child template. Both child templates are children of the master. I am referring to the child templates by index. One template caption is 'MVA' (index 0) and the other is 'P' (index 1). Let's assume there is only 1 of each.

Here is what happens:

if I have the 'MVA' tab selected and then export the MVA template is output twice and no 'P' template is output. However, if I have the 'P' tab selected the two 'P' records are output and no 'MVA'.

It looks as if I need to programmatically select first the 'MVA' tab and output the rows and then select the 'P' tab and output the rows.

I can't seem to reference the two sets of child rows directly.

GridView

answered on 20 Jul 2010

1 answer

188 views

errors when migrating from Q1 SP2 to Q2

We got these errors when trying to upgrade our Q1 SP2 projects:

1. no 'VisualElement' property

GridViewRowInfo r = radGridView.Rows[i];

r.VisualElement.ForeColor = System.Drawing.Color.Red;

2. no 'CellElement' property

GridViewCellInfo gvci = radGridView.Rows[i].Cells[0];

GridCheckBoxCellElement gcbce = (GridCheckBoxCellElement)gvci.CellElement;

3. no 'Owner' property

var col = (GridViewDataColumn)cell.ColumnInfo;

col.OwnerTemplate.Owner;

Please help us to fix the above errors. Thanks in advance.

BR/shortie

GridView

answered on 20 Jul 2010

1 answer

125 views

Demo for Winforms Q2 2010 has unhandled exception

Hello Telerik,

I am looking into the just released Demo of Winforms UI components Q2 2010. On a fresh Windows XP setup (all windows updates installed) the provided demo application shows in Gridview / Spreadsheet a simple undhandeld exception because "System.ArgumentException: Font 'Calibri' cannot be found." A quick search seems to indicate that Calibri is a font that came new with Vista and can be installed on XP by downloading and installing the MS PowerPoint Viewer 2007.

Maybe you want to fix this in future releases to provide the best possible first impression of your great components.

Regards,
Ralf

General Discussions

answered on 20 Jul 2010

5 answers

330 views

Dynamic imagekey change

Hi, a breaking change has happened between 2009Q1 1414 and 2009Q2 SP1 9729.

I add images dynamically to an imagelist. Then I change the ImageKey (tried with ImageIndex as well) on a node. The image is not shown. This breaks my application which worked fine on 2009Q1 1414.

                            private void radButton1_Click(object sender, EventArgs e)         
                    {         
                        imageList1.Images.Add(radTextBox1.Text, Image.FromFile(radTextBox1.Text));         
                     
                        //radTreeView1.Nodes[0].ImageKey = radTextBox1.Text;         
                     
                        radTreeView1.Nodes[0].ImageIndex = imageList1.Images.IndexOfKey(radTextBox1.Text);         
                    }         

Any ideas?

- jorge

Treeview

answered on 20 Jul 2010

3 answers

171 views

[Solved] ComboBoxEditor on certain cells

I'm building a property-editor style grid with a readonly column with the name of the property and then an editable column to enter data. Some of the rows have drop-down values where they have their own unique choice of drop-down entries. I can get the comboBoxEditor to appear with the following code:

private void radGridView1_EditorRequired(object sender, EditorRequiredEventArgs e)

List<string> fixedValues = GetFixedValues();

if (fixedValues == null) return; //will use a normal textbox editor for items with no fixedValues

RadComboBoxEditor comboEditor = new RadComboBoxEditor();

(comboEditor.EditorElement as RadComboBoxEditorElement).DataSource = fixedValues;

e.Editor = comboEditor;

e.EditorType = typeof(RadComboBoxEditor);

}

but I am having trouble optimizing the use of the combobox for data entry. The comboBox loses its value as you tab through the cell without changing anything. Basically I haven't found any way to set the selected index or the value. I think it has to do with the Items property never being populated, but I can't get it to populate even though the DataSource is set.

Any ideas?

Thanks,
Adam

GridView

answered on 20 Jul 2010

1 answer

219 views

[Solved] Error Checkbox in radGridView

I add column checkbox in radGridView. When I check it error " Specified cast is not valid "

Code:
if (this.radGridView1.ActiveEditor is RadCheckBoxEditor)
{
bool value = (bool)this.radGridView1.ActiveEditor.Value;
}

Help Me. Thank You.

GridView

answered on 19 Jul 2010

2 answers

283 views

[Solved] Add Control in Cell with RadGridView

Hi !

1) I want add control in Cell of RadGridView.
2) Set color for Cell .
e.g: radGridView1.Rows[1].Cell[2]....?

Help Me. Thanks

GridView

answered on 19 Jul 2010

1 answer

88 views

AJAX LoadingPanel-Like Functionality

Can you recommend me a method to obtain ajax loadingpanel-like functionality when using WinForms controls? This would help in showing to a user that a background operation is currently in progress on a particular part of the application (for example a control in the bottom-right corner of the application) while still allowing him to browse through the rest of the application. I feel that simply changing the cursor to a waitcursor is not enough, as he has to be hovering the mouse over the usercontrol to realize that work is being done related to that component.

General Discussions

answered on 19 Jul 2010

1 answer

539 views

Dock(fill) is incorrect

This may not be the right place for this, but i've never really seen this happen before.

Basically I have a user control (attachment 1). The control consists of a splitcontainer with 2 panels. panel 1 is a radgridview, panel 2 is a listbox. below the splitcontainer is a radtextbox.

In my code i add that control with tabpage.contentpanel.controls.add()
and I use the Dock = DockStyle.Fill;

This does not turn out the way it should.(see attachment 2).
Any ideas why the Dock is not responding properly?

General Discussions

answered on 19 Jul 2010

1 answer

532 views

Changing the indentation of treeview

Is there a way to control how far a child node is indented? right now, the treeview looks nice, but takes up too much horizonal space, and I am looking to compress it somewhat.

Thanks.

Treeview

answered on 19 Jul 2010