Hi
I'm using Linq to bind data to a binddatasource which in trun feeds data to a radgridiview.  It works fine when I first bind data to the radgridview.  But if I changed the search criteria and thus the Linq statement, the radgrdiview throws the following exception.

Before I upgrade to 2009Q1 SP1, I need to

                tblitemItemsBindingSource.DataSource = null;  // throw exception if without this statement using 2008Q3
                tblitemItemsBindingSource.DataSource = qItems.OrderBy(i => i.item_Code).ToList();

However, after upgraded to 2009Q1 SP1, the above line is no longer useful.

In my experience, 2009Q1 breaks more things more than it fixes.  I'm very flustrated.

Edwin 

 System.NullReferenceException was unhandled
  Message="Object reference not set to an instance of an object."
  Source="Telerik.WinControls.GridView"
  StackTrace:
       at Telerik.WinControls.UI.BaseGridNavigator.get_CurrentGroup()
       at Telerik.WinControls.UI.BaseGridNavigator.SelectRow(GridViewRowInfo row)
       at Telerik.WinControls.UI.GridTableElement.UpdateCurrentPosition()
       at Telerik.WinControls.UI.GridViewInfo.SetCurrentRow(GridViewRowInfo row, Boolean setPosition, Boolean shift, Boolean control, Boolean rightMouseButton)
       at Telerik.WinControls.UI.GridViewTemplate.SetCurrentRow(GridViewRowInfo rowInfo)
       at Telerik.WinControls.Data.DataAccessComponent.InitDataGrid()
       at Telerik.WinControls.Data.DataAccessComponent.currencyManager_ListChanged(Object sender, ListChangedEventArgs e)
       at System.Windows.Forms.CurrencyManager.OnListChanged(ListChangedEventArgs e)
       at System.Windows.Forms.CurrencyManager.List_ListChanged(Object sender, ListChangedEventArgs e)
       at System.Windows.Forms.BindingSource.OnListChanged(ListChangedEventArgs e)
       at System.Windows.Forms.BindingSource.ResetBindings(Boolean metadataChanged)
       at System.Windows.Forms.BindingSource.SetList(IList list, Boolean metaDataChanged, Boolean applySortAndFilter)
       at System.Windows.Forms.BindingSource.ResetList()
       at System.Windows.Forms.BindingSource.set_DataSource(Object value)
       at PopularIT.MOSES.POS.UI.frmSearchItem.fillGrid(Boolean expandRows) in C:\Projects\MOSES.POS\MOSES.POS\UI\frmSearchItem.cs:line 85
       at PopularIT.MOSES.POS.UI.frmSearchItem.txtItemName_KeyDown(Object sender, KeyEventArgs e) in C:\Projects\MOSES.POS\MOSES.POS\UI\frmSearchItem.cs:line 146
       at System.Windows.Forms.Control.OnKeyDown(KeyEventArgs e)
       at System.Windows.Forms.Control.ProcessKeyEventArgs(Message& m)
       at System.Windows.Forms.Control.ProcessKeyMessage(Message& m)
       at System.Windows.Forms.Control.WmKeyChar(Message& m)
       at System.Windows.Forms.Control.WndProc(Message& m)
       at System.Windows.Forms.TextBoxBase.WndProc(Message& m)
       at System.Windows.Forms.TextBox.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(Int32 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.RunDialog(Form form)
       at System.Windows.Forms.Form.ShowDialog(IWin32Window owner)
       at System.Windows.Forms.Form.ShowDialog()
       at PopularIT.MOSES.POS.UI.frmSales.btnSearch_Click(Object sender, EventArgs e) in C:\Projects\MOSES.POS\MOSES.POS\UI\frmSales.cs:line 266
       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(Int32 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.RunDialog(Form form)
       at System.Windows.Forms.Form.ShowDialog(IWin32Window owner)
       at System.Windows.Forms.Form.ShowDialog()
       at PopularIT.MOSES.POS.UI.frmMain.btnSales_Click(Object sender, EventArgs e) in C:\Projects\MOSES.POS\MOSES.POS\UI\frmMain.cs:line 121
       at PopularIT.MOSES.POS.UI.frmMain.btnSalesNow_Click(Object sender, EventArgs e) in C:\Projects\MOSES.POS\MOSES.POS\UI\frmMain.cs:line 170
       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(Int32 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 PopularIT.MOSES.POS.Program.Main() in C:\Projects\MOSES.POS\MOSES.POS\Program.cs:line 82
       at System.AppDomain._nExecuteAssembly(Assembly 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)
       at System.Threading.ThreadHelper.ThreadStart()
  InnerException:

Hello,

I have a Radgrid.

What i want to do is, that when a numeric value is negative it should be in forecolor red. This is not the Problem.

But when i group the grid by any of the header other values have forecolor red although the value is not negative and its fieldname is not "erfolg"  or "erfolgprozent".

 

My code is:

 

 If TypeOf e.CellElement.ColumnInfo Is GridViewDataColumn Then
            If DirectCast(e.CellElement.ColumnInfo, GridViewDataColumn).FieldName.ToLower = "erfolg" Or DirectCast(e.CellElement.ColumnInfo, GridViewDataColumn).FieldName.ToLower = "erfolgprozent" Then
                If IsNumeric(e.CellElement.Value) Then
                    If CDbl(e.CellElement.Value) < 0 Then
                        e.CellElement.ForeColor = System.Drawing.Color.Red
                    Else
                        e.CellElement.ForeColor = System.Drawing.Color.Black
                    End If
                End If
            End If
        End If

 

Hello,

Is there a way to have RadDataEntry controls read only? I know I can set Enabled =False for the whole RadDataEntry control but i"d like to limit it for some users while allow others to make changes. Also, users with read only access should be able to copy RadDataEntry controls values which is not the case for Enabled=False scenario.

Any clue is appreciated.

Thanks

Wojciech

Hello, 

how can I change the "GridViewPdfExport.PageSize Property" from Default 210 x 297 mm to Din A 4 Landscape 297 x 210 mm?

Namespace "Telerik.WinControls.Export" is imported.

Using PdftoExport is not an option because I need the header feature. 

I am using VB.Net.

Thanks in advance,

F. Schulze

hi ,

I want my binding data source to update or refresh after adding a new record to the database.When I add one it won't update till closing and re-opening the form.

I would like the Ribbonbar to always appear collapsed even when I select some of the tabs on it.  I want to be able to expand it only when certian criteria are met.

So far I have been unable to get the ribbonbar to start off Collapsed, nor can I get it to remain collapsed.

 

Please Advise

 

Thanks

 

Jason

I have a RadSplitbutton with 6 subitems.    When I click on the arrow, I expect the dropdown menu to be displayed, instead it is first firing the click event of the button, then displaying the menu.  This is not what I wan to happen!

How to I prevent this from happening when trying to select the Arrow?

 

Thanks

 

Jason

 

 

Grid is cleared and then Loaded with data. User selects "new row" and the system puts them on a specific cell. User enters a value and TABS or ENTERS. Then does other tasks. User returns to the grid which is again cleared and then Loaded with data. The user selects "new row" and the system puts them on a specific cell, which is prepopulated with the previous value entered. 

>>> Would like not to have the new row cell pre-populated 

 

Steps:

1. Add a value to a cell (a) on a new grid row and commit it.

2. Perform other tasks on the form

3. Return to the Grid in (1) and open a new row. 

> The value from (1) is set as the default for the cell (a)

Although I clear the grid before repopulating, I haven't been able to remove this default (previous) value. 

 

Just before I Load the grid:  

 

 

Any ideas how to prevent it from pre-populating? 

 

 

 

 

 

 

 

 

 

Hi,

I'm working on a project where I need to display data in Telerik RadGridView.

One of the column is going to display icons (can be multiple, displayed horizontally). These icons will be provided from .resx file of the project.

I was exploring custom column, tried creating custom column with RadPanelElement assuming that I'll be able to add picturebox windows control to the RadPanelElement object like

protected override void SetContentCore(object value)
        {
            if (this.Value != null && this.Value != DBNull.Value)
            {
                //this.radProgressBarElement.Value1 = Convert.ToInt16(this.Value);
                //this.radImageList
                foreach(string strImgIndex in this.Value.ToString().Split(','))
                {
                    PictureBox pbIcon = new PictureBox();
                    switch (int.Parse(strImgIndex))
                    {
                        case 0:
                            pbIcon.Image = WindowsFormsApplication1.Properties.Resources.binoculars;
                            break;

                        case 1:
                            pbIcon.Image = WindowsFormsApplication1.Properties.Resources.open;
                            break;

                        case 2:
                            pbIcon.Image = WindowsFormsApplication1.Properties.Resources.printer;
                            break;
                    }

                    //this.radImageList.Controls.Add (NOT ABLE TO ADD CONTROLS DYNAMICALLY)
                    //pbIcon.Image = Image.
                }
            }

It didn't work as not able to add controls to RadPanelElement. Please provide a way out to achieve the required custom column.

Thanks & Regards

Brajendra Singh

 

Hello,

I have a grid view with a cell containing either a TextBox which is ReanOnly or a ComboBox for which the user has to select a value.

The arrow button of ComboBox cell is only visible when user clicks on cell to edit it. Thus, the user does not know if he has to select or not a value

I'd like that the arrow button of ComboBox cell is always visible to indicate to user that a value has to be selected.

I've tried to set the visibility of arrow button in EditorRequired event but it has no effect.

        void QualityControlsEntryGridView_EditorRequired(object sender, EditorRequiredEventArgs e)
        {
            if (QualityControlsEntryGridView.Columns["Result"].IsCurrent)
            {
                if (QualityControlsEntryGridView.CurrentRow.Cells["ReferenceValueToType"].Value.ToString() != "")
                {
                    e.Editor = new RadTextBoxEditor();
                    e.EditorType = typeof(RadTextBoxEditor);
                }
                else
                {
                    e.Editor = new RadDropDownListEditor();
                    e.EditorType = typeof(RadDropDownListEditor);
                    RadDropDownListEditorElement editorElement = (RadDropDownListEditorElement)((RadDropDownListEditor)e.Editor).EditorElement;
                    editorElement.ArrowButton.Visibility = ElementVisibility.Visible;
                }
            }
        }