Questions on UI for WinForms Forum

1 answer

149 views

How can i turn off autoscroll for child control of RadPanelBar

Hello every body,

i want to display full size of an control (Panel) within an RadPanelBar.
I just see a part of it. I have set AutoScroll = false, it turn back to true.

How can i display the whole child control of RadPanelBar without seeing
the scrollbar?

Would you kindly help me?

Panelbar (obsolete as of Q2 2010)

answered on 09 Sep 2010

5 answers

365 views

How to release memory when RadDock is created on PageViewPage?

Hello Team Telerik,

This is very likely a simple question to answer:

My test winforms application (Telerik Winforms components Q2 2010) has one RadPageView component on Form1. Each Button1 click will create a new PageViewPage and put a RadDock on it (see code below). Running this app from within VS2008 will show in Windows Taskmanager (Windows 7 32 bit) after the application-start approx. 40MB memory working set. Clicking 20 times on Button1 will increase the memory to approx 80MB. Closing all pages by clicking on the X button of the PageView TabStrip will not reduce the amount of used memory (instead creating another set of 20 pages by clicking Button1 will result in further increased memory allocation).

namespace WindowsFormsApplication4

{

public partial class Form1 : Form

{

public Form1()

{

InitializeComponent();

}

private void button1_Click(object sender, EventArgs e)

{

RadPageViewPage page = new RadPageViewPage();

page.Text = "Page";

RadDock dock1 = new Telerik.WinControls.UI.Docking.RadDock();

dock1.Dock = System.Windows.Forms.DockStyle.Fill;

page.Controls.Add(dock1);

this.radPageView1.Pages.Add(page);

this.radPageView1.SelectedPage = page;

}

Trying to remove dock1 from the page and disposing it when the page is removed did not help:

private void radPageView1_PageRemoving(object sender, RadPageViewCancelEventArgs e)

{

RadDock dock1;

RadPageViewPage page = this.radPageView1.SelectedPage;

if (page != null)

{

Control[] pagecontrols = page.Controls.Find("radDock1", false);

int numerofpagecontrols = pagecontrols.Length;

if (numerofpagecontrols == 1)

{

dock1 = (RadDock)pagecontrols[0];

page.Controls.Remove(dock1);

dock1.Dispose();

}

Thank you very much for any feedback.
Regards,
Ralf

PageView

answered on 09 Sep 2010

7 answers

1.0K+ views

Setting RadDropDownList to NoSelection in code

Hello everybody.

I have a problem with rad drop downlist.
My drop down list is unbound and populated during runtime, every item having text and value.
A valid value to be displayed should be 'no selection' => SelectedValue = null
The selected item should change after the selected node in a tree view is changed

When I first select item which have null as value for the drop down list, everything's ok.
But after an entry from the DrowDownList was selected and the try to change the SelectedValue to null, I have the problem, that even though the SelectedValue seems to be null, the text of the last selected item is still displayed.

I tried setting the value to NULL by using:

SelectedValue = null;
SelectedIndex = -1;
SelectedItem = null;

All produced the same result: The SelectedValue is null when I check, but there is still text displayed.
So, my question is: how can I reset the DropDownList to a state where no item is selected by code.

Thanks for any help

DropDownList

answered on 09 Sep 2010

3 answers

631 views

Cell Editing Events

Hi,
I have a gridview with rows added at runtime. i have some 5 radcheckbox columns. I wish to detect changes made to checkbox columns. i.e checked state.
I am trying to use the cell_beginedit and cell_endedit events.
I am using 2010 Q1

Problems:
Begin event fires perfectly on first checkbox checked state change. After the event finishes the end event must fire. It only fires whence i change checked box state in another row. else on the same row same checked box cell it wont fire. If i change state of a checkbox cell continuosuly , the beginedit event only fires the first time, next time it doesn't fires because the editor hasn't ended.

I tried to close the editor myself in the begin edit event but nothing happens.

void gvLiveCnns_CellBeginEdit(object sender, GridViewCellCancelEventArgs e)

{

// Do some work, cancel event if work not performed as expected

this.gvLiveCnns.EndEdit();

this.gvLiveCnns.ActiveEditor.EndEdit();

this.gvLiveCnns.CloseEditor();

}

Any solution to this problem. Please provide a solution using this event only as i wish to cancel out editing event if worked not performed as expected.

Thank you.

GridView

answered on 08 Sep 2010

1 answer

79 views

Access Custom Object associated with Row

I'm evaluating your controls for use in my project and I have a question.

This is my case:
1. I use SQLite Db and I would like to display data from specific table in the Grid.
2.I wold like to access all attributes of the row(s) selected in the grid (when user invokes context menu).
The context menu will depend on certain attributes of the Row. (some menu items will be enabled or disabled).

How can I accomplish this?

GridView

answered on 08 Sep 2010

6 answers

297 views

Increase Resource Header width

Hi,

Is there a way to increase the resource header width and the font color.

Please see the attached image.

thanks

Scheduler and Reminder

answered on 08 Sep 2010

3 answers

205 views

Setting Font Size After or Before Setting Data Source

I am using Linq to fill a gridview like so...

Private Sub findCustomer(Optional ByVal s As String = Nothing)

Dim cs = From c In cA.Select(False) Where _

IIf(IsNothing(s), 1 = 1, c.cLastName Like s & "*") _

Select New With _

{ _

.Name = c.cLastName & ", " & c.cFirstName, _

.Phone = c.cPhoneHome & " / " & c.cPhoneWork, _

.DOB = c.cDateOfBirth _

}

_totalCount = cs.Count

_currentCount = 0

loadCustomers()

End Sub

and now all the information loads correctly and it looks fine, but no matter what I tweek or set, or change, the font on the records is always at 8 pts. and I would like it to be larger like around 14 pts. Everything else on the grid view shows at 14, but the records that are loaded into it, are still small.

How would I set that to a larger font?

GridView

answered on 08 Sep 2010

2 answers

161 views

[Solved] GridView not filtering null

Hi,

I have GridView 2010.2.10.713 WinControls,
Using the built in filtering in the GridView binding with a datatable. All other filter methods work but null/

Whenever I say is Null or is not null, nothing happens, then after trying different filters with values it sometimes works.

Thanks
-Eric

GridView

answered on 08 Sep 2010

3 answers

186 views

Radgridview Tahoma font

Hi
Our company try to test your products especially your winform controls to make a decision to buy it. Your product is well designed
but we encoutered several problems. One of them (and perhaps the biggest) is that your radgridview doesn't work with Tahoma, Zar and other Arabic fonts. Please inform us or give a way to fix this.
Besh Regards
Ahmad

GridView

answered on 08 Sep 2010

4 answers

343 views

Problem with saving appointment in radscheduler

Hello All

I am trying to use your sample database and i have binded your sample database with scheduler,whenever i tried to save the appointment this error come

Unable to cast object of type 'System.Guid' to type 'System.IConvertible'.Couldn't store <995f3481-b5a0-4435-82ec-137fb699b43b> in ID Column. Expected type is Int32.

Please guide me to find the solution.

Thanks & regards
Pulkit

Scheduler and Reminder

answered on 08 Sep 2010