Questions on UI for WinForms Forum

1 answer

398 views

Hi,

Ive created a custom control using the telerik controls, which is based on the "business card" example provided in the demo code.
That is a RadControl that allows custom RadButtomElements to be added to it. The RadButtonElements are stored in a WrapLayoutPanel. However Im having difficulty getting scrolling to work properly. Ive seen quite a few examples and threads about scrolling using the stacklayoutpanel, however I want to use the wraplayoutpanel to get better presentation, as each element is of variable size. However using the wraplayout the scrollbars do not appear correctly. At runtime it looks as though the viewport settings are calculated as if the viewport is a stacklayout not a wraplayout.

Any help will be greatly appreciated.

Hopefully looking at this code will make a bit more sense...

Version of Rad controls (WinForm) 2009.3.9.1203

RadScrollViewer

scrollViewer = new RadScrollViewer();

Telerik.WinControls.UI.RadPanel radPanel1= new Telerik.WinControls.UI.RadPanel();

this.Controls.Add(this.radPanel1);
WrapLayoutPanel wrapLayout = new WrapLayoutPanel();

wrapLayout.Orientation =

Orientation.Horizontal;

scrollViewer.Viewport = wrapLayout;

this.radPanel1.PanelElement.Children.Add(scrollViewer);

for(int i = 0 ; i < 100; i++)

{

wrapLayout.Children.Add(

new RadButtonElement() {Text = "Test" + i, Padding = new Padding(5), Margin = new Padding(2), Size = new Size(50,10)});

}

ScrollablePanel

answered on 11 Nov 2010

9 answers

214 views

[Solved] Exception: File not found

Hi
I got a weird Problem:
If i compile my .exe file, i can run it without problems..
but if i want to run it on another computer, the app crashes and says, it cant find Telerik.WinControls and/or Telerik.WinControls.UI. What am i doing wrong?

regards

General Discussions

answered on 11 Nov 2010

5 answers

307 views

DropDownList option and Scroll

Hello,

I come to you in order to expose a problem I meet with RadDropDownList with dropDownlist option.

In fact when I want to scroll almong the items I meet a special behavior where the dropDownlist is scroolling, but the form behind scrool too, and the dropdownlist is finally detached.

Screenshot here

I didn't find any issues in forum regarding this behavior. Is it already referenced at your level?

Any information?

Thanks for your help
Regards

Denis

DropDownList

answered on 11 Nov 2010

4 answers

240 views

[Solved] Set new row in edit mode programartically

Hi,

i've got some problems when i want to put a newly added row in edit mode through code.
My scenario is:
Q 2010 Sp2 GridView, which is bound to a BindindSource. The BindingSource is bound to an ObjectResult (EF4).
I wanted to add a new row via BindingSource.AddNew method.
Then i wanted the first cell of that newly added row to be in edit mode without any extra clicks.
The cell editor should be shown and ready to receive my input.

None of forums threads regarding "putting a cell in edit mode programatically" worked for me.
So i am looking for a general solution.

Kind Regards
Kim

GridView

answered on 11 Nov 2010

2 answers

391 views

clean example of telerik rad ribbon form

hi,

I am new in rad ribbon form, I've just added new rad ribbon form, I need to do many thing in that form, so I was trying to go to demo project "Bug Tracker" in "RadControls for WinForms Q2 2010 SP2 Demos", but I am unable to open it !!

I got errors in initialization of form in visual studio environment, please check the attached image: telerik rad form 'bug tracker'.png.

so I need a clean tutorials and example for changing ribbon form to office 2007 black theme, adding ribbon bars, adding controls to ribbon bars and so on. easily, I wanna do something looks like "Bug Tracker", please refer to this image: bug_tracker_demo.jpg

thanks

RibbonBar

answered on 11 Nov 2010

2 answers

175 views

Themes doesn't apply

To whom it may concern,

I use RadControls for WinForms Q2 2010 SP2, I have my own Themes for different components, I want to apply them to an Application in my computer works correctly with themes i make an .Exe and work fine with themes. But when I change the .Exe to another computer. It works but without themes. So i want to know how to apply the themes in a .Exe also I don't want to create a Folder with the themes in the directory of the .Exe for example. I just want the .Exe with the themes. Is that possible?.

Regards,
Ing. Jesús M. Astorga L.

Themes and Visual Style Builder

answered on 11 Nov 2010

25 answers

1.1K+ views

[Solved] Change cells custom control based on value from a columns dropdown

Hi,

In my grid i have two columns. The first column are binded to a list of custom datatypes.
A custom datatype can be: DataTime, number or list of strings.
The second column should be of the type that the first column selected value is on the same row.

So if the selected value in the first column is DateTime, then the second column (ON THIS ROW) should show a DataTimePicker.
If the selected value in the first column is a "list of strings", then i have to lookup the value in the database and present the second column (ON THE SAME ROW) with a list of strings in a combobox and so on.

1. Is there any way to do this?
2. How do i get the bounded item from the combobox in the first column?

/ST

GridView

answered on 11 Nov 2010

1 answer

218 views

Regarding Combobox column in Radgridview

Hi,
I would like to add a combobox column in RadGridview and I have added it. Now the Problem is how to add items into those comboboxcells dynamically and also when i would like to display the related information in nearby texboxcell in radgridview depending upon the users selection. Please provide immediate attention...

Thanking You

Regards

Zeno..

GridView

answered on 11 Nov 2010

4 answers

141 views

[Solved] more than 3 Y-axies chart

I need to create a chart with more than three Y-axies as my attach file show.
Is there any way to create this kind of chart?

Chart (obsolete as of Q1 2013)

answered on 11 Nov 2010

10 answers

778 views

[Solved] Memory Usage: Where's the problem in my code?

Hi,

I'm currently evaluating different grids. For a current project we need a grid which can display up to some 100.000 rows. Currently I'm testing with a file which is 50 MB in size and has almost 500.000 lines. Of course this is a case where the virtual mode is required. For comparision I have made a small app, which reads in the file and displays them in a grid. First version is just the normal way adding the lines to a datatable and binding it to the grid.

StreamReader sr = new StreamReader(Application.StartupPath + "\\Data\\beispieldaten2010_50mb.csv", Encoding.Default);

DataTable dt = new DataTable();

dt.Columns.Add("Spalte 1");

...

dt.Columns.Add("Spalte 14");

while (!sr.EndOfStream)

{

dt.Rows.Add(sr.ReadLine().Split(new char[] {';'}));

}

radGridView1.DataSource = dt;

Start this app and after almost 5 seconds the grid is filled with data. Memory usage at this moment approx 370 MB. Now the virtual mode where the memory usage is expected to be much lower isn't it?

StreamReader sr = new StreamReader(Application.StartupPath + "\\Data\\beispieldaten2010_50mb.csv", Encoding.Default);

ArrayList al = new ArrayList();

while (!sr.EndOfStream)

{

al.Add(sr.ReadLine().Split(new char[] { ';' }));

}

radGridView1.VirtualMode = true;

radGridView1.CellValueNeeded += new Telerik.WinControls.UI.GridViewCellValueEventHandler(radGridView1_CellValueNeeded);

radGridView1.ColumnCount = 14;

this.radGridView1.RowCount = al.Count;

And the event handler code is here:

void radGridView1_CellValueNeeded(object sender, Telerik.WinControls.UI.GridViewCellValueEventArgs e)

{

string[] c = (string[])al[e.RowIndex];

e.Value = c[e.ColumnIndex];

}

Starting thgis app it takes 5 seconds and the memory usage is surprisingly at 370 MB. So there seems not to be any change. What have I done / unterstood wrong? Setting a breakpoint to the eventhandler shows, that this part of code is unreachable and seems not to be called. So where comes then the data from?

Thanks for your help,
Michael

GridView

answered on 10 Nov 2010