Questions on UI for WinForms Forum

1 answer

117 views

error appear when filtering in mutlicolumn combobox

hello i am facing this problem : for any keypress on the combobox, the window where I use this multicolumn combo box is closing and this error appears:
"System.InvalidCastException: Unable to cast object of type 'Telerik.WinControls.UI.RadMultiColumnComboBox' to type 'Telerik.WinControls.UI.RadGridView'."
i am using q2 2009.
thanks in advance

MultiColumn ComboBox

answered on 13 Mar 2012

1 answer

252 views

Load Layout Issue

Hi,

I am trying to to save and load the grid layout settings to/from a file. i am able to save the layout settings to a file but unable to load from the file, getting the below error. Here i have created custom header cell for my grid.

Could you please help me in resolving this issue?

Below is the code snipper for Save / Laod

private void SaveLayout_Click(object sender, EventArgs e)

{

this.radGridView1.SaveLayout(@"C:\\xyz.xml");

}

private void RestoreLayout_Click(object sender, EventArgs e)

{

this.radGridView1.LoadLayout(@"C:\\xyz.xml");

}

Stack Tracer of the issue:

at System.RuntimeTypeHandle.CreateInstance(RuntimeType type, Boolean publicOnly, Boolean noCheck, Boolean& canBeCached, RuntimeMethodHandleInternal& ctor, Boolean& bNeedSecurityCheck)

at System.RuntimeType.CreateInstanceSlow(Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache)

at System.RuntimeType.CreateInstanceDefaultCtor(Boolean publicOnly, Boolean skipVisibilityChecks, Boolean skipCheckThis, Boolean fillCache)

at System.Activator.CreateInstance(Type type, Boolean nonPublic)

at Telerik.WinControls.XmlSerialization.RuntimeInstanceFactory.CreateInstance(Type instanceType)

at Telerik.WinControls.XmlSerialization.ComponentXmlSerializer.ReadMergeCollection(XmlReader reader, Object parent, PropertyDescriptor parentProperty, IList toRead, String uniquePropertyName, Boolean preserveNotSerializedExistingElements, Boolean disposeObjects)

at Telerik.WinControls.UI.GridViewLayoutSerializer.ProcessListOverride(XmlReader reader, Object listOwner, PropertyDescriptor ownerProperty, IList list)

at Telerik.WinControls.XmlSerialization.ComponentXmlSerializer.ReadElementInObject(XmlReader reader, PropertyDescriptor property, Object toRead)

at Telerik.WinControls.XmlSerialization.ComponentXmlSerializer.ReadObjectElement(XmlReader reader, Object parentObject, Object toRead)

at Telerik.WinControls.XmlSerialization.ComponentXmlSerializer.ReadElementInObject(XmlReader reader, PropertyDescriptor property, Object toRead)

at Telerik.WinControls.XmlSerialization.ComponentXmlSerializer.ReadObjectElement(XmlReader reader, Object parentObject, Object toRead)

at Telerik.WinControls.UI.RadGridView.LoadLayout(XmlReader xmlReader)

at Telerik.WinControls.UI.RadGridView.LoadLayout(String fileName)

at GridApplication.Form1.RestoreLayout_Click(Object sender, EventArgs e) in E:\Telerik POC\GridApplication\GridApplication\Form1.cs:line 200

at System.Windows.Forms.Control.OnClick(EventArgs e)

at System.Windows.Forms.Button.OnClick(EventArgs e)

at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)

at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)

at System.Windows.Forms.Control.WndProc(Message& m)

at System.Windows.Forms.ButtonBase.WndProc(Message& m)

at System.Windows.Forms.Button.WndProc(Message& m)

at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)

at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)

at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)

at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(IntPtr dwComponentID, Int32 reason, Int32 pvLoopData)

at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)

at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)

at System.Windows.Forms.Application.Run(Form mainForm)

at GridApplication.Program.Main() in E:\Telerik POC\GridApplication\GridApplication\Program.cs:line 18

at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)

at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)

at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()

at System.Threading.ThreadHelper.ThreadStart_Context(Object state)

at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx)

at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)

at System.Threading.ThreadHelper.ThreadStart()

Thanks & Regards
Muralidhar Dasari

GridView

answered on 13 Mar 2012

1 answer

104 views

[Solved] RTL WeekView Scheduler Bug While Navigating With UP/Down Arrows

Just reporting what I think might be a bug.
This happens in a scheduler in weekview mode with the RightToLeft property set to True (2011 Q3):
When for example the last time slot of the Wednesday is selected, if DOWN arrow is pressed, the first time slot of Tuesday will be selected. It goes back instead of going forward to the next day.
The same problem exists with the UP arrow. It goes to next day instead of previous day.

Scheduler and Reminder

answered on 13 Mar 2012

5 answers

230 views

RadPanelbar containing RadGridViews

In my app, i have an radpanelbar that is populated at runtime with multiple radpanelbargroupelements (variable number, depending on the user's role), where in each of those elements, there is a radgridview.

I want to give the user the possibility to choose his layout: outlook, explorer, list,toolbox.

I works fine in outlook and list style.

When choosing explorer style, i want each radpanelbargroupelement to expand and evenly fill the available space in the radpanelbar.

The expanding works, but i cannot set the height of the contentpanel to take up as much space to evenly fill the radpanelbar.
I can this be done?

walter

Panelbar (obsolete as of Q2 2010)

answered on 13 Mar 2012

1 answer

198 views

[Solved] Minimize Floating ToolWindow

Hi

I can bring my toolwindow outside the my main program it is working great. Floating function works fine. But Sometime our customer want to some new features. They bring toolwindow outside program and minimize main program they only want to see toolwindow. but they dont see. cause when they minimize main program (main program owner the dock (toowindow)) toolwindow minimize together main form. how can I block this. Forexample if your toolwindow is floating after you want to minimize your main program. I dont want to minimize the toolwindow in this time. How can I do this.

I use Telerik 2011 Q2

Best Regards

Dock

answered on 13 Mar 2012

2 answers

256 views

[Solved] Insert item

Hi!

I'm trying to insert a single item in a DataList, but i only get a null point exception (Object reference not set to an instance of an object..) If i "add" the same item first and then "insert" it's working, but not with insert alone...

This is not working:
lvServiceResult.Items.Insert(0, new ListViewDataItem(text + @"..."));

This is working:
lvServiceResult.Items.Add(new ListViewDataItem(text + @"..."));
lvServiceResult.Items.Insert(0, new ListViewDataItem(text + @"..."));

Any ideas?

BR,
Erlend Haukland

ListView

answered on 13 Mar 2012

2 answers

111 views

rad theme designer data attribute

Hello,
I have downloaded the trial version of winforms. I cant add most of the components from toolbox, it gives the following error.

Also every time i built my project it gives to following error.

My System is:
Windows 7
Visual Studio 2010 with SP1

General Discussions

answered on 13 Mar 2012

2 answers

154 views

How can I put filer on certain column but not all columns

Hi All,

I use datatable to connect gridview. After that I would like to have filer on column 1 but not all columns

.EnableFiltering = True

.MasterTemplate.EnableFiltering = True

This code switched the whold grid filter on.

Any idea to that?

Thanks

GridView

answered on 12 Mar 2012

2 answers

148 views

BackstageView in RibbonBar

I have a problem with ribbonBar on backstageView mode. The button which open backstage isn't fit to other tabs.
Picture below decribe this situation:

I would like have a effect for example with MS Outlook program, next picture show those tabs.

Someone can resolve this problem ?

Thanks.

RibbonBar

answered on 12 Mar 2012

3 answers

175 views

[Solved] Use specific columns to fill grid space

I am working my way through evaluating Telerik as a replacement for Syncfusion.

One of the requirements for the application is to show nine columns for example but fill the window with just the first four leaving the rest scrollable. This needs to happen when the screen is initially displayed and anytime it is resized. The four columns should shrink and expand as required to fill the space in the grid and should adapt to whether the grid is grouped or not.

Granted this was done with some hard won knowledge of how Syncfusion's GroupingGrid works but I need to be able to accomplish the same thing with GridView to make it a viable replacement.

Is this possible with GridView?

GridView

answered on 12 Mar 2012