Questions on UI for WinForms Forum

14 answers

1.5K+ views

RadGridView not Refreshing after binding data

Hello,

i am having frmHome.vb with radgridview control, i am opening frmHome.vb form in RadDoc tab in frmMainapplication.vb form.
data is binded to gridview, in grid view there is on commanbutton column. by clicking the command button i am opening frmTagDetails.vb in tab. in formDetails i am having one button. if i click on that button a new form is opend to with two radion buttons.
after selectiecion one of the option from it and clicking on OK button. and record is inserted in database table. testUser.
after inserting record in testuser i need to update the radgridview. automatically and new user detals must be displayed. my
frmhome.vb form is already open.

Dim objfrmHome As New frmHome

objfrmHome.gridViewHome.DataSource = Nothing

AssetBusinessLogic.GetDataToFillGridView(_assetChecklist.Asset.Project.ProjectID)

objfrmHome.gridViewHome.MasterTemplate.DataSource = AssetBusinessLogic.aTLi

objfrmHome.gridViewHome.Refresh()

objfrmHome.gridViewHome.MasterTemplate.Refresh()

objfrmHome.gridViewHome.MasterTemplate.AutoSizeColumnsMode = GridViewAutoSizeColumnsMode.Fill

i am using this code but the while loading the details from database i am getting the lattest details.

but after binding to grid the grid is not refreshed. 



i have stucked over here.



Thanks in advance

GridView

answered on 14 Oct 2010

1 answer

121 views

Hierarchical RadGridView performance

Hello,
I experience poor performance in hierarchical RadGridView which is bounded to BindingSource object.

Using bindingSource.ResetBindings(false) in this grid lasts almost 2 seconds (in normal grid it lasts only 0,1sec).
Relation is created in designer (not programmatically). There are 5k rows in BindingSource. Grid is bounded to BindingSource in designer (radGridView.DataSource = bindingSource);

Can you give any clues how can I make bindingSource.ResetBindings() faster ?

GridView

answered on 14 Oct 2010

1 answer

119 views

Show menu when button clicked on chart serie item.

Hello!

Is there any possibility to get information about button clicked on chart item, because I need to show context menu if right button clicked.

For know I use following code:

private void ActiveRegion_Click(object sender, RegionClickEventArgs args)

{

var fileId = Convert.ToInt32(args.Element.ActiveRegion.Attributes);

_tableFilesBindingSource.Position = SearchFilesTableBindingSource(fileId);

_isOnSomeSerieItem = true;

}

...

private void _radChart1_MouseClick(object sender, MouseEventArgs e)

{

if (e.Button == MouseButtons.Right && _isOnSomeSerie)

{

GetFileGridMenu().Show(_radChart1, e.X, e.Y);

_isOnSomeSerieItem = false;

}

where _isSomeSerieItem is private filed.
Is there more correct way to do that?

Chart (obsolete as of Q1 2013)

answered on 14 Oct 2010

2 answers

104 views

“Folder Tree” cannot retrieve data correctly.

“Folder Tree” mode.
Private Sub Grid_CellBeginEdit(ByVal sender As Object, ByVal e As GridViewCellCancelEventArgs)
programName = DirectCast(Grid.Rows(e.RowIndex).Cells("program").Value, String)

with code in your example, i could not get the correct cell value because e.rowindex somehow is the wrong row... due to rearranging in tree mode...

It took me few hours to find out that your e.rowindex is reference to the non-tree mode grid... so how can I get user interaction during the tree mode?

Also your support ticket page is 404 error.

Thanks,
J.

GridView

answered on 14 Oct 2010

3 answers

185 views

Arithmetic Exception

Hello Telerik Team,

I am facing a rather strange problem with the telerik dropdownlist and listbox.

I am developing an application which relies on a couple of nonmanaged driver-dlls. As soon as I load one particular dll, after that I cannot instanianate ANY telerik dropdownlist or listbox. As soon as the controls ctor is called, an arithmeticexception is thrown. The call stack is as follows:

bei Telerik.WinControls.UI.RadScrollBarElement.get_ThumbLengthProportion()

bei Telerik.WinControls.UI.RadScrollBarElement.SetupThumb(Int32 newValue, Boolean thumbLocationOnly)

bei Telerik.WinControls.UI.RadScrollBarElement.set_Maximum(Int32 value)

bei Telerik.WinControls.UI.VirtualizedScrollPanel`2..ctor()

bei Telerik.WinControls.UI.RadListElement..ctor()

bei Telerik.WinControls.UI.PopupEditorElement.CreateChildElements()

bei Telerik.WinControls.UI.RadDropDownListElement.CreateChildElements()

bei Telerik.WinControls.RadElement.CallCreateChildElements()

bei Telerik.WinControls.RadElement.Construct()

bei Telerik.WinControls.RadElement..ctor()

bei Telerik.WinControls.RadItem..ctor()

bei Telerik.WinControls.UI.PopupEditorElement..ctor()

bei Telerik.WinControls.UI.RadDropDownListElement..ctor()

bei Telerik.WinControls.UI.RadDropDownList.CreateChildItems(RadElement parent)

bei Telerik.WinControls.RadControl.Telerik.WinControls.IComponentTreeHandler.CreateChildItems(RadElement parent)

bei Telerik.WinControls.RadControl.ComponentOverrideElementTree.CreateChildItems(RadElement parent)

bei Telerik.WinControls.RadControl.Construct()

bei Telerik.WinControls.RadControl..ctor()

bei Telerik.WinControls.UI.RadDropDownList..ctor()

bei SenseIT._4Dtwo.CatchIT.Forms.AddNewDevice.InitializeComponent() in E:\Projekte\es-tfs\ES.4Dtwo\ES.4Dtwo.Hydra\ES.4Dtwo.Hydra\SenseIT.4Dtwo.CatchIT\Forms\AddNewDevice.Designer.cs:Zeile 37.

bei SenseIT._4Dtwo.CatchIT.Forms.AddNewDevice..ctor() in E:\Projekte\es-tfs\ES.4Dtwo\ES.4Dtwo.Hydra\ES.4Dtwo.Hydra\SenseIT.4Dtwo.CatchIT\Forms\AddNewDevice.cs:Zeile 20.

bei SenseIT._4Dtwo.CatchIT.Controls.DeviceView.radButton1_Click(Object sender, EventArgs e) in E:\Projekte\es-tfs\ES.4Dtwo\ES.4Dtwo.Hydra\ES.4Dtwo.Hydra\SenseIT.4Dtwo.CatchIT\Controls\DeviceView.cs:Zeile 161.

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

bei Telerik.WinControls.RadControl.OnClick(EventArgs e)

bei Telerik.WinControls.UI.RadButton.ButtonElement_Click(Object sender, EventArgs e)

bei Telerik.WinControls.RadItem.OnClick(EventArgs e)

bei Telerik.WinControls.UI.RadButtonItem.OnClick(EventArgs e)

bei Telerik.WinControls.RadItem.DoClick(EventArgs e)

bei Telerik.WinControls.RadItem.RaiseBubbleEvent(RadElement sender, RoutedEventArgs args)

bei Telerik.WinControls.RadElement.RaiseRoutedEvent(RadElement sender, RoutedEventArgs args)

bei Telerik.WinControls.RadItem.RaiseBubbleEvent(RadElement sender, RoutedEventArgs args)

bei Telerik.WinControls.RadElement.RaiseRoutedEvent(RadElement sender, RoutedEventArgs args)

bei Telerik.WinControls.RadElement.DoMouseUp(MouseEventArgs e)

bei Telerik.WinControls.ComponentInputBehavior.OnMouseUp(MouseEventArgs e)

bei Telerik.WinControls.RadControl.OnMouseUp(MouseEventArgs e)

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

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

bei System.Windows.Forms.ScrollableControl.WndProc(Message& m)

bei Telerik.WinControls.RadControl.WndProc(Message& m)

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

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

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

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

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

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

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

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

bei SenseIT._4Dtwo.CatchIT.Program.Main() in E:\Projekte\es-tfs\ES.4Dtwo\ES.4Dtwo.Hydra\ES.4Dtwo.Hydra\SenseIT.4Dtwo.CatchIT\Program.cs:Zeile 21.

bei System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args)

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

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

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

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

bei System.Threading.ThreadHelper.ThreadStart()

Do you have any idea how I could work around this problem?

best regards

Ulrik

DropDownList

answered on 14 Oct 2010

15 answers

390 views

Nested Child Grids

I have the following Grid structure:

MasterGridViewTemplate (dgTransactions) --> ChildGridTemplate1 (cSubCat) --> ChildGridTemplate2 (cTrans)

I am populating each Template with Data but the ChildGridTemplate2 is not displaying any data - even though that the Datasource is populated with data.

Code snippet:

GridViewTemplate cSubCat = new GridViewTemplate(this.dgTransactions);

GridViewRelation relGridSubCat = new GridViewRelation(this.dgTransactions.MasterGridViewTemplate);

relGridSubCat.ChildTemplate = cSubCat;

relGridSubCat.ChildColumnNames.Add("CategoryType");

relGridSubCat.ParentColumnNames.Add("CategoryType");

this.dgTransactions.Relations.Add(relGridSubCat);

this.dgTransactions.MasterGridViewTemplate.ChildGridViewTemplates.Add(cSubCat);

GridViewTemplate cTrans = new GridViewTemplate(this.dgTransactions);

GridViewRelation relSubCatTrans = new GridViewRelation();

relSubCatTrans.ChildTemplate = cTrans;

relSubCatTrans.ParentTemplate = this.dgTransactions.MasterGridViewTemplate.ChildGridViewTemplates[0];

relSubCatTrans.ChildColumnNames.Add("CategorySubType");

relSubCatTrans.ParentColumnNames.Add("CategorySubType");

this.dgTransactions.Relations.Add(relSubCatTrans);

cSubCat.ChildGridViewTemplates.Add(cTrans);

var sub = from x in this.CurrentTransactions

select new { CategorySubType = x.CategorySubType, CategoryType = x.CategoryType };

this.dgTransactions.DataSource = sub.Select(grp => new { grp.CategoryType }).Distinct().ToList(); ;

cSubCat.DataSource = sub.Select(grp => new { grp.CategorySubType, grp.CategoryType }).Distinct().ToList();

cTrans.DataSource = this.CurrentTransactions.ToList();

GridView

answered on 14 Oct 2010

14 answers

249 views

Chang Current Row at chang current row at hierarchical

Hello,
I want to chang current row at radgrid .I use 3 level hierarchical and want to chang seleted row from level 1 to level 2 and so on.

GridView

answered on 14 Oct 2010

2 answers

174 views

RadGridView AllowAddNewRow Error

Hello,

I´m traying to use the AllowAddNewRow property of RadGridView but
i have an error when set to true this property.

The error ocurrs when you configures the grid with readonly columns property.
When you drag and drop the "Click here to add new row" cell to other readonly cell in diferent row.

this is my example

GridViewTextBoxColumn

txtEstatus = new GridViewTextBoxColumn();

txtEstatus.Name =

"Estatus";

txtEstatus.HeaderText =

"Estatus";

txtEstatus.ReadOnly =

true;

radGridView1.Columns.Add(txtEstatus);

GridViewTextBoxColumn txtot = new GridViewTextBoxColumn();

txtot.Name =

"OT";

txtot.ReadOnly =

true;

txtot.HeaderText =

"OT";

radGridView1.Columns.Add(txtot);

radGridView1.AllowAddNewRow =

true;

radGridView1.AutoSizeColumnsMode =

GridViewAutoSizeColumnsMode.Fill;

radGridView1.Rows.Add((

new List<string> {"333","333","dd","dd" }).ToArray());

to resolve this error i have to set each cell for this row to readonly

The error says Message= "No se puede convertir un objeto de tipo 'Telerik.WinControls.UI.GridViewDataRowInfo' al tipo 'Telerik.WinControls.UI.GridViewNewRowInfo'.

"Unable to cast object of type 'Telerik.WinControls.UI.GridViewDataRowInfo' to type 'Telerik.WinControls.UI.GridViewNewRowInfo'.

GridView

answered on 14 Oct 2010

7 answers

165 views

Validation

Hi,
is there any way to shorten my validation code?? like using case, etc..???
I have been tried many ways to shortened it, but i got nothing but error because the parameter (ByVal e As Telerik.WinControls.UI.CellValidatingEventArgs)
here my code:

Private Sub TabelBuku_CellValidating(ByVal sender As System.Object, ByVal e As Telerik.WinControls.UI.CellValidatingEventArgs) Handles TabelBuku.CellValidating

Dim kolom = TryCast(e.Column, GridViewDataColumn)

If ((TypeOf e.Row Is GridViewDataRowInfo Or (TypeOf e.Row Is GridViewNewRowInfo)) AndAlso (kolom IsNot Nothing) AndAlso (kolom.FieldName = "Tahun Terbit")) Then

Dim nilai = DirectCast(e.Value, String)

If (String.IsNullOrEmpty(nilai)) Then

e.Cancel = True

e.Row.ErrorText = "Tahun Terbit Belum Diisi"

warningKesalahan(Color.LightYellow, Color.Red, "Tahun Terbit Belum Diisi!!")

Else

e.Row.ErrorText = String.Empty

warningKesalahan(Color.Transparent, Color.LimeGreen, "Editor Data Buku")

End If

If ((TypeOf e.Row Is GridViewDataRowInfo Or (TypeOf e.Row Is GridViewNewRowInfo)) AndAlso (kolom IsNot Nothing) AndAlso (kolom.FieldName = "IdBuku")) Then

Dim nilai = DirectCast(e.Value, String)

If (String.IsNullOrEmpty(nilai)) Then

e.Cancel = True

e.Row.ErrorText = "ID Buku Harus Diisi"

warningKesalahan(Color.LightYellow, Color.Red, "ID Buku Harus Diisi")

Else

e.Row.ErrorText = String.Empty

warningKesalahan(Color.Transparent, Color.LimeGreen, "Editor Data Buku")

End If

End Sub

GridView