Questions on UI for WinForms Forum

9 answers

594 views

[Solved] Chanaging the color of a cell using CellElement

i have download the trial version of your product (WinForms) to test it and give feed back to my boss to decide if this will be useful to buy,
every this is alright except one issue,
pleas have a look on my code

dataGridView1.DataSource = tab; //where tab is returned from the database and have more than 100 row
for (int i = 0; i < dataGridView1.Rows.Count; i++)
     {
            try
                {
                    dataGridView1.Rows[i].Cells[0].CellElement.DrawFill = true;
                    dataGridView1.Rows[i].Cells[0].CellElement.BackColor = Color.Red;
                }
                catch
                { }
       }
the loop stop every time on row number 9
it throw exception "Object reference not set to an instance of an object" on CellElement (CellElement is null)
is that because its a trial version?
i don't want to use Cell Formatting Event cuz this will not be helpful for me
thanks

GridView

answered on 20 Oct 2011

1 answer

421 views

Count filtered rows on RadgridView

Hi,

Is there a way of counting the visible rows after applying a filter?

GridView

answered on 20 Oct 2011

4 answers

191 views

Theming RadListView for WinForms?

I am having a strange problem theming the RadListView control using the Visual Style Builder in Telerik RadControls for WinForms, Q2 2011, SP1. RadListView no longer appears in the Controls structure at all, for any of the themes! Here is the sequence of events that lead to this:

1) I exported all of the built-in themes to *.TSSP files.

2) I then opened the Office2010Silver.tssp package to use as a starting point for my custom theme.

3) I made some modifications to the theme for the RadButton and RadListView elements.

4) I saved it under a new name (say MySilver.tssp).

5) I integrated it into my application to test it.

6) I found some issues with my RadListView theming, made some changes, saved, and tested again.

7) Now I can't see the RadListView element in ANY of the themes, either the built-in ones or my custom theme, even if I exit and re-start Visual Style Builder.

I would appreciate any help that you can offer. Thanks!

-- John J. Szucs, Venio, Inc.

Themes and Visual Style Builder

answered on 20 Oct 2011

1 answer

233 views

Export RadGridView to Excel

Hi,
I have a problem in exportin data from one RadGridView to Excel.

I am usig the method bellow but I receive an error:

Dim excelExporter As New ExportToExcelML(Me.adminGridView)

excelExporter.SheetName = "SituatieGala"

excelExporter.ExportVisualSettings =

True

excelExporter.RunExport(fs.FileName)

When I am trying to create the variable excelExporter I receive the attached jpg's error!

Also I have made the necesary imports:

Imports Telerik.WinControls

Imports Telerik.Data Imports

Telerik.WinControls.UI.Export

Imports System.IO

GridView

answered on 20 Oct 2011

1 answer

190 views

Adding themes makes winforms loading slow

Hi,

We are using telerik controls for our winforms project. When we add themes to that project it loads really slow

Is it possible to add themes runtime after user select or change any theme ??

Regards,

Dishant

Themes and Visual Style Builder

answered on 20 Oct 2011

1 answer

231 views

Tool tips not working

Hi,

I am using RadDropdownList and tool tips dont appear to the items in the list.I set the Auto tool tip property to all the elements.
Also ,I cannot scroll thru the list using up and down arrow keys in the auto suggest list
Also the suto suggest list does a '<typedtext>%' search.Is there any setting that does the '%typedtext%' search

DropDownList

answered on 20 Oct 2011

1 answer

335 views

Theme makes loading really slow in winforms

Hi,

We are using telerik controls for our winforms project. When we add themes to that project it loads really slow

Is it possible to add themes runtime after user select or change any theme ??

Regards,

Dishant

Themes and Visual Style Builder

answered on 20 Oct 2011

1 answer

990 views

Get Active page on RadPageView

Hi,
I am developing an application in which I need to get the active page on a radpageview in order to make different settings for each page. For example when I am in page 0 I would like to block the button maximize from the application, but on the other hand, when I click on page 1 I need to leave the user to maximize the window if he wants this.

Can this be done? If Yes then what is the event that recognize the page changes from radpageview and how do I get the active page name or index?

Thanks

PageView

answered on 20 Oct 2011

1 answer

546 views

Y-Axis Autoscale

Hi, I have a problem with autoscale on RadChart
I want Y-Axis to autoscale and this works just fine if values in the dataset i'm binding has variations in it's y-values.
But if values in Y-axis is constant, then autoscale does not seem to trigger ?
I have set IsZeroBased=false.

Any Ideas ?

//Mats

Chart (obsolete as of Q1 2013)

answered on 20 Oct 2011

1 answer

173 views

GridViewComboBoxColumn and cell value

When using the gridviewcomboboxcolumn, shouldn't the cell's value be set to the Value of the combobox and not the text?

here is the code I am using to add the items to the combobox. It is always choosing the text of the combobox instead of the value.

oCombobox = CType((CType(e.ActiveEditor, RadDropDownListEditor)).EditorElement, RadDropDownListEditorElement)

oCombobox.Items.Add(New RadListDataItem("Boolean", GetType(Boolean).ToString))

oCombobox.Items.Add(New RadListDataItem("Date", GetType(DateTime).ToString))

oCombobox.Items.Add(New RadListDataItem("Numeric", GetType(Double).ToString))

oCombobox.Items.Add(New RadListDataItem("Text", GetType(String).ToString))

What am doing wrong?

GridView

answered on 19 Oct 2011