Questions on UI for WinForms Forum

2 answers

189 views

Question about navigating root element tree

Hi,

I would like to programmatically get to some of the hidden properties that I can see in the Element Hierarchy Editor, but don't see an obvious way to do so.

For instance, a RadButton has a root element and then a Fill Primitive, Layout, Focus, Border, etc. Drop down lists have other goodies in there. How does one get there in c#?

Is it something like this, but then casting it to something else? For instance..
(FillPrimitive) btnFoo.RootElement.children[0]

It would be really nice to know how to navigate the tree because there are a lot of properties that we could take advantage of.
Thanks.
Jason

General Discussions

answered on 08 Feb 2012

6 answers

178 views

visible area in gridview

Hello..
I want to know how many rows there are in the visible area in gridview..
how can I do that?

this is for controlling load of rows.. to get better performance..
I want to load 30 rows each scrolling..

GridView

answered on 07 Feb 2012

2 answers

227 views

Problems with visualizing subitems

Hello together,

I'm having some difficulties with a RadListView. My RadListView has 3 Columns: 1 for displaying an icon, 1 for a filename and the third for the author.
My problem is, that only the first column is displayed and all the text columns are empty. I don't know why. Perhaps someone of you can help. Here is the code:

ImageList MyImageList = new System.Windows.Forms.ImageList();

MyImageList.Images.Add(global::Test_SharePoint_DocumentList.Properties.Resources.icgen);

MyImageList.ImageSize = new Size(16, 16);

lst_Files.ViewType = Telerik.WinControls.UI.ListViewType.DetailsView;

lst_Files.ShowGridLines = true;

lst_Files.FullRowSelect = true;

lst_Files.Columns.Add("File","File");

lst_Files.Columns.Add("Filename", "Filename");

lst_Files.Columns.Add("Author", "Author");

lst_Files.Columns[0].Width = 30;

lst_Files.SmallImageList = MyImageList;

foreach(Microsoft.SharePoint.SPFile file in files)

{

for (int j = 0; j < MyImageList.Images.Count; j++)

{

Telerik.WinControls.UI.ListViewDataItem item2 = new Telerik.WinControls.UI.ListViewDataItem();

item2.Image = global::Test_SharePoint_DocumentList.Properties.Resources.icgen;

item2.ImageIndex = j;

item2.Tag = mysite.Url + "/" + file.Name;

Telerik.WinControls.UI.ListViewDataItem item3 = new Telerik.WinControls.UI.ListViewDataItem();

item3.Text = file.Name;

item3.Value = file.Name;

Telerik.WinControls.UI.ListViewDataItem item4 = new Telerik.WinControls.UI.ListViewDataItem();

item4.Text = file.Author.ToString();

item4.Value = file.Author.ToString();

Telerik.WinControls.UI.ListViewSubDataItemCollection subcol = new Telerik.WinControls.UI.ListViewSubDataItemCollection(item2);

subcol.Add(item3);

subcol.Add(item4);

lst_Files.Items.Add(item2);

}

Count++;

}

And that's how it looks like in debug (see attachment):

ListView

answered on 07 Feb 2012

2 answers

204 views

How to clean Excel like filters

Hi,

I have enabled the Excel like filtering, but every time I change the DataSource on the radGridView, the filter for a column is not updated. I have tried to clean the filters using:

MasterTemplate.FilterDescriptors.Clear();

MasterTemplate.FilterExpressions.Clear();

But those collections are empty, since I'm not creating my own filters. Any help will be appreciated.
Thanks

GridView

answered on 07 Feb 2012

5 answers

273 views

Grouping by nested object

Hi,
I am trying to group my gridview data by a nested object like this:

DataSource = List<Person>

GroupExpression: Address.Suburb as Sub Group By Sub

This results in the data being correctly sorted but the grid will not display any group headers. Is there a way to do this?

thanks

GridView

answered on 07 Feb 2012

1 answer

137 views

DeskTop Alert

I can’t find desktop alert control on my tray. Could you give me name of dll file

Then i can browse to the tray

GridView

answered on 07 Feb 2012

3 answers

181 views

ExportToCsv

Hi,

I have a problem with the last release of WinForms.

The line :

Dim csvexporter As ExportToCSV = New ExportToCSV(Me.RadGridView1)

display an error ExportToCSV is not defined.

My code came from your help so I don't understand.

Imports System.IO

Imports System.Data.OleDb

Imports Telerik.WinControls.UI.Localization

Imports System.Runtime.InteropServices

Imports Telerik.WinControls.UI

Imports Telerik.WinControls

Imports Telerik.WinControls.Data

Imports Telerik.WinControls.UI.Export

Imports System.Net.NetworkInformation

Private Sub RadButton2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles RadButton2.Click

Dim csvexporter As ExportToCSV = New ExportToCSV(Me.RadGridView1)

SaveFileDialog1.RestoreDirectory = True

If SaveFileDialog1.ShowDialog() = System.Windows.Forms.DialogResult.OK Then

csvExporter.RunExport(SaveFileDialog1.FileName)

End If

End Sub

Can you help me please ?
Thanks

Anthony

GridView

answered on 06 Feb 2012

1 answer

119 views

XAxis AutoTextWrap

I'm connecting to a access database to get the top ten artists played on the jukebox.
Everything works fine, the only problem is the way the chart displays the artist names in the X-axis.
Everything is cluttered. I want the labels to auto wrap but there must be more space so everything will fit in nicely.

Chart (obsolete as of Q1 2013)

answered on 06 Feb 2012

1 answer

179 views

Error: Index was out of range

Hi! Im using VB.Net 2010 and Telerik Q1.2011. I facing some issue on grid View.
My gridview im using datasource to bind to the GridView and using ViewDefination to view.
My GridView had Filtering which is on for all the column. The problem is like below:

1. I using code(BeginEdit) to enable edit mode on Row (0). Cell(0)
2. I didn't type anything mean the value is still the original value.
3. I direct click on the Filtering of the Column (0). mean it was focus on the Column (0) Filter.
4. I didn't type anything... i just click back to row(0).

Error Appear....
5- index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index

I hope to get the reply with solution soon...
Thank you!

Regards
Johnny

GridView

answered on 06 Feb 2012

2 answers

516 views

RadDropDownList Databinding

I have a RadDropDownList that I have successfully bound to a List object by setting the DisplayMember and ValueMember of the RadDropDownList to the properties of my data list object, and by setting the DataSource of the RadDropDown to the list.
The above takes care of populating the choices in RadDropDown.

I want to know if its possible to also bind the SelectedValue to another property in my data class. And if changes in this Data property would reflect back in the SelectedValue of the RadDropDown with the implementation of the INotifyPropertyChanged event for the Data property.

DropDownList

answered on 06 Feb 2012