It flickering when the left menu is collapsed or expanded.

 

I've use custom tablelayoutPanel with doubleBufer

 

How can fix it?

 

Thx.

pd. don't know how can i share a example proyect so i put here a link to my onedrive hope it can help you, thx again.

https://1drv.ms/u/s!Aub3FOLN5IO_gudWobcwA4fzVTvXNg?e=dpc3o5

Hello,

I´´m trying to insert a column in Radgridview in winforms using the following code:

Dim dateTimeColumn As New GridViewDateTimeColumn()

dateTimeColumn.UniqueName =

"DateTimeColumn"

dateTimeColumn.HeaderText =

"Test"

dateTimeColumn.FieldName =

"TestDate"

dateTimeColumn.FormatString =

"{0:MM/dd/yy}"

RadGridProjects.MasterGridViewTemplate.Columns.Add(dateTimeColumn)

I also tried do insert this column in design mode, but, the column always appear with the format 01/01/2000 02 00:00:00 instead of 01/01/2000.

What am I doing wrong?

Thank You
LM

I am trying to figure out how to use the drilldown feature. 

 

I looked at the drilldown "help" http://docs.telerik.com/devtools/winforms/chartview/features/drill-down but not sure how to get it to apply to my situation because I don't really have separate "views" or binding. I really just need to be able to get an event to tell me that I've double clicked on a data point.

 

I have created a multi-level donut chart (attached), and I want to be able to double click on any segment and recreate the chart centered on that segment.

 

I did try adding a view and a DrillDownController hoping that it would fire the "drill" event but it did not.

 

As an aside, I believe that the description in the "help" for the "InnerRadiusFactor" of the donut series is either incorrect or at least misleading. It says that "its value is used as a percentage of the whole radius", but it appears to work as a percentage of the RadiusFactor amount. If it were the whole radius, I could set it to 0.2 and I should get consistently sized series bands that are 20% of the available space, but what it actually gives me are bands that are 20% of the radius of the series defined by RadiusFactor. I had to scale at (1 / (RadiusFactor * 5) to get a consistently 20% sized bands.

Hi Telerik,

I am using Timelinerange =Timerange.Month. This is perfect.

But how can i show the dayname under the date? Also i would like to skip the weekend in the timeline. Is this possible?

Regards,
Karsten Wendt

 

I haven't found in the documentation how we can I acces the current image in a PictureBox control to save it in a database as a binary field.

If I try to access the image property, after pasting an image, it just return nothing (databinding on image property ?).

I need to develop a simple app using .NET and Windows Forms. One requirement I have is build a beautiful GUI. However I find Windows Forms quite limited for this purpose. There are any good libraries NuGet ir anything to improve the capabilities or visual styles of Windows Forms ?
I checked MaterialSkin but still is kinda limited. Help appreciated.

I'm having difficulty understanding the flow of how these events get called and where I should modify formatting info. 

The grid view events I'm working with currently are grid_CellFormatting, grid_CellBeginEdit, grid_CellEndEdit.  I have a grid, that has many columns of data that are bound to a generic list of objects.  These objects have bool properties I'd like to allow the user to update through a single grid with many columns/rows.  The majority of the columns are GridViewCheckBoxColumn(the ones that I want to not be read-only).  I'd like to allow the user to check these boxes, and it will turn the cell they are contained within to a different color.  Then after they've clicked many, they can commit these changes using a save button.  

I assume that I can only update the formatting of a cell in the _cellformatting event.  So, I assume I need to pass some data along to this event that allows it to look at the checkbox and determine if the value is changed.  I've written some code that would do this using the .Tag object on the cell.  This isn't working well, and I'm looking for some advise.  I can't be the first one to use a grid in this fashion.  Allow users to make changes, and see those changes, and then commit all at once.

Any advice?

1.- Issue:
I have a RadGridView consisting of one master template and a child template. I query my database, build a dataset and I assign it to the RadGridView datasource.

It works just fine with few records but when I pull a considerable amount of data it takes forever to render, specially if I want my rows to be expanded from the beginning.

For Each row As GridViewRowInfo In template.Rows
     row.IsExpanded = True
Next

Is there any way to improve the render time of the RadGridView ? The query and code take around 3 seconds to run, but when I go row by row expanding all of them it just takes like 2 minutes. I am attaching what it looks like when it finished loading. The 400 row hast more than 8000 records in the child template. I know its big data, but is there any way to improve this ?

2.- Issue
As soon as the RadGridView finishes loading the data mentioned above, if I close the screen the resources are not freed at all. I tried calling RadGridView1.Dispose() but it takes more than 10 seconds to just run the dispose command. Is this a known issue that the RadGridView eats a lot of memory and can't free it by itself ?

I am running Telerik for WinForms 2020.2.616.40

Thanks for any information provided.

I notice default RadDesktopAlert  backcolor is transparent, when I move mouse it change to solid color without transparent, please let me know if this is possible to remove its transparent backcolor property?

Thanks,
Shakti

Hi

I use Telerik UI for WinForm 2014 radchart.

I need to insert a logo picture and a label involved NowDate in printed chart page.

for this goal I insert a label and picture box on radchartviewer component but when I print(radchartviewer1.Print()) neither label or logo not printed.

Please help me.

 

Thanks.