Questions on UI for WinForms Forum

4 answers

198 views

Hello,

When using hierarchical gridview, and acceding to the child gridview with the IDE, I noticed that at first I had only one child gridview, but after clicking on OK button, I got 2, then 4 identical gridviews. And they are displaying caption tabs saying "Table".

I tried to remove them, to keep only one, but then no child gridview was kept by the designer (gridviewTemplate was lost) , and compiling became impossible.

Is this a known bug ? Is there a way to safely remove the duplicated child gridviews and keep only one ?

Thank you for any help.

GridView

answered on 15 Mar 2011

12 answers

316 views

Self-Reference takes too long to expand a node

I have a grid with 5 columns, the first 2 columns, ID and ParentID, are for self-reference setup and are hidden. The rest are a checkbox and 2 text columns. I set its datasource to a BindingList that has a single row and 250 "child" rows. The parent row expands fine when there is no sorting. However, as soon as I click on any of the column headers to sort, it takes more than 10 seconds to expand, and scrolling also becomes very sluggish.
I'm using the latest release, RadControls_WinForms_2010_3_10_1215_dev. Is there a trick to speed it up? Below are the code snippet and attached is a scree

Thanks,
Andy

private void Form1_Load(object sender, EventArgs e)

{

PopulateGrid();

radGridView1.Relations.AddSelfReference(radGridView1.MasterTemplate, "ID", "ParentID");

}

private void PopulateGrid()

{

BindingList<RowBindingInfo> rowList = new BindingList<RowBindingInfo>();

int rowID = -1;

for (int i = 0; i < 1; i++)

{

RowBindingInfo rowInfo = new RowBindingInfo(++rowID, -1, false, "Room " + i.ToString(), "Desc " + i.ToString());

rowList.Add(rowInfo);

int pid = rowID;

for (int j = 0; j < 250; j++)

{

RowBindingInfo childRow = new RowBindingInfo(++rowID, pid, false, string.Empty, "Desk " + j.ToString());

rowList.Add(childRow);

}

radGridView1.DataSource = rowList;

}

public class RowBindingInfo

{

public RowBindingInfo(int rid, int prid, bool incl, string r, string d)

{

ID = rid;

ParentID = prid;

Included = incl;

Room = r;

Desc = d;

}

public int ID { get; set; }

public int ParentID { get; set; }

public bool Included { get; set; }

public string Room { get; set; }

public string Desc { get; set; }

}

Thanks,
Andy

GridView

answered on 15 Mar 2011

11 answers

489 views

[Solved] Export to CSV

Need some help here...

I'm exporting a RadDataGrid to CSV but get the 'object reference to instance of an object' error. Every time i have a empty *.csv doc and the csvExporter.RunExport crashes...

Changing it to an Excel exporter makes it work fine.

code:

Dim exportGridView As New Telerik.WinControls.UI.RadGridView

exportGridView.DataSource = rep.GetObjectCorrespondentieGegevens(projectId)

Public Function GetObjectCorrespondentieGegevens(ByVal id As Integer) As Object Implements     ICorrespondentieRepository.GetObjectCorrespondentieGegevens

Dim model = From p In _db.tblAannemers.AsEnumerable() _

Select p.fldAannemerNaam

Return model

End Function

Private Shared Sub RunExportToCSV(ByVal fileName As String, ByRef gridView As RadGridView)

Dim csvExporter As ExportToCSV = New ExportToCSV(gridView)

'csvExporter.FileExtension = "txt"

'csvExporter.SummariesExportOption = SummariesOption.ExportAll

Try

'csvExporter.

csvExporter.SummariesExportOption = SummariesOption.DoNotExport

csvExporter.RunExport(fileName) ' this is where the exception happens :-(

Catch ex As Exception

End Try

End Sub

General Discussions

answered on 15 Mar 2011

1 answer

171 views

Order of strips to display

Hi,
I'm probably doing something wrong. But I have not find any help in documentation and in the demos.
When I prepare commandbar visually in designer, I'm able to move strips to correct order.
But how to do this in code?
I merge two commandbars together, so I add the strip to the commandCarRow, but in soe cases this second strip is displayed before the original first. And I have no clue why?

commandBarChild.Rows[0].Strips.Add(strip);

Thanks for any idea, as I said I didn't find any help in documentation or demos for that. If there is something about it, jsut point me there, please.

CommandBar

answered on 15 Mar 2011

3 answers

191 views

Invoke() on RabButtonElement ?

Hello

How can I change the properties from a RadButtonElement from another thread ?

Hervé

RibbonBar

answered on 15 Mar 2011

3 answers

325 views

Label and radmarkupeditor

I am needing to display some text on my form which has some older HTML tags, e.g. FONT, and other HTML tags.

The radlabel does not display the HTML properly even when wrapped in "<HTML>". However, if I set the value of the radmarkupeditor to the HTML, it is displayed properly. In fact, when I hit APPLY, it actually converts the older tags to more compliant versions, ala SPAN tags with STYLE attributes.

How can I get the label to display the HTML properly? Or which control does the radmarkupeditor take advantage of? Or can I call the internal "convert" method somehow?

Please advise!

TextBox

answered on 15 Mar 2011

3 answers

186 views

[Solved] How to restrict user to leave a radForm in radDock.

Hello Everybody,

How to restrict users to leave from one radForm to other before completing a certain process in radDock. I tried to apply some logic on radDock_ActiveWindowChanged event but its not restraining it to change. Following code I wrote in radDock changed event.

((HostWindow)(this.radDock1.DockWindows(radDock1.ActiveWindow.Name + "1"))).Select();
((DocumentWindow)(this.RadDock1.DockWindows(windowName))).Select();

Thanks,
Saad

Dock

answered on 15 Mar 2011

1 answer

258 views

Code Share: Hide Filter row text

If you don't like the way the RadGridView adds the Filter text (e.g. Contains, Equals, etc) in the Filter row, you can use this code that I wrote. The text is unreadable in skinnier columns. Plus, it confused my users since clicking on the word "Contains" did not automatically allow them to start typing; they had to click next to the word.

Anyways, this code simply collapses the text element and adds a tooltip to the filter row's cell and button.

Private Sub RadGridView1_ToolTipTextNeeded(ByVal sender As Object, ByVal e As Telerik.WinControls.ToolTipTextNeededEventArgs) Handles RadGridView1.ToolTipTextNeeded

If TryCast(sender, GridFilterCellElement) IsNot Nothing Then

e.ToolTipText = CType(sender, GridCellElement).ToolTipText

End If

End Sub

Private Sub RadGridView1_ViewCellFormatting(ByVal sender As Object, ByVal e As Telerik.WinControls.UI.CellFormattingEventArgs) Handles RadGridView1.ViewCellFormatting

HideFilterText(e.CellElement)

End Sub

Friend Sub HideFilterText(ByVal CellElement As GridCellElement)

Dim oFilterCellElement As GridFilterCellElement

Try

If TryCast(CellElement, GridFilterCellElement) IsNot Nothing Then

oFilterCellElement = CType(CellElement, GridFilterCellElement)

oFilterCellElement.ToolTipText = oFilterCellElement.FilterOperatorText.Text.Replace(":", "")

oFilterCellElement.FilterButton.ToolTipText = oFilterCellElement.FilterOperatorText.Text.Replace(":", "")

oFilterCellElement.FilterOperatorText.Visibility = Telerik.WinControls.ElementVisibility.Collapsed

End If

Catch ex As Exception

' Do nothing

End Try

End Sub

I now use this on all my grids within my current project. It would be nice if something similar was built in. If it is already, then I've missed it in the documentation.

Feel free to offer code improvements or another way.

GridView

answered on 15 Mar 2011

1 answer

175 views

[Solved] Treeview Refresh

Hi, I'm having an issue refreshing the data in my treeview. Here is the treeview.

'Build Tree View

Private Sub BuildtvOrgan()

tvOrgan.RelationBindings.Add(New RelationBinding("CompanyDepts", Me.DepartmentBindingSource))

tvOrgan.RelationBindings.Add(New RelationBinding("Department_Employee", Me.EmployeeBindingSource))

tvOrgan.RelationBindings.Item(0).DisplayMember = "DeptName"

tvOrgan.RelationBindings.Item(0).ValueMember = "id"

tvOrgan.RelationBindings.Item(0).DataSource = DepartmentBindingSource

tvOrgan.RelationBindings.Item(1).DisplayMember = "FName"

tvOrgan.RelationBindings.Item(1).ValueMember = "id"

tvOrgan.RelationBindings.Item(1).DataSource = EmployeeBindingSource

tvOrgan.DataSource = CompanyBindingSource

tvOrgan.ValueMember = "id"

SetImages(tvOrgan.Nodes)

tvOrgan.ExpandAll()

End Sub

Now, when I modify the underlying data the treeview doesn't change. It does change if I add data to the underlying tables. If I add a new Company.Department.Employee to the datatables the treeview updates, with an expandall(). However if I change department A to now be in department C instead of B it doesn't move until I reload the app. Any idea's anyone? How can I get the treeview to show changes made to the datasource.

Thanks

DropDownList

answered on 15 Mar 2011

2 answers

173 views

Custom Appointment window

Is it possible to replace the appointment window with a custom window where you will have full control?

Best R, Thomas

Scheduler and Reminder

answered on 15 Mar 2011