Questions on UI for WinForms Forum

1 answer

554 views

PDFViewer from Memory Stream

I just can't seem to get my PDF to load. I amcreating a RadFixedDocument.

If I export it to a file, and load it to the viewer, it works just fine:

using (var stream = File.OpenWrite(resultFile))

{

PdfFormatProvider provider = new PdfFormatProvider();

provider.Export(pdf, stream);

}

pdfXactReport.LoadDocument(resultFile);

Seems like this should work, what am I missing??

using (var saveToMS = new MemoryStream())

{

PdfFormatProvider provider = new PdfFormatProvider();

provider.Export(pdf, saveToMS);

pdfXactReport.LoadDocument(saveToMS);

}

PdfViewer and PdfViewerNavigator

answered on 01 Dec 2017

2 answers

973 views

Unable to create RadGridView component

Hello,

After having Designer issues (i hacked the designer) i removed my UserControl who was the problem; i created a new one wich is the exact (mostly) same UserControl. But when i want to create a new RadGridView i'm getting this error:

Unable to create component 'RadGridView'.

'System.Runtime.InteropServices.COMException (0x8004D45); A reference of 'Telerik.WinControls.GridView already existe in the project.

at VSLangProj.References.Add(String bstrPath)

at Microsoft.VisualStudio.Design.VSTypeResolutionService.PerformReferenceUpdate(List'1 newReferences)

at Microsoft.VisualStudio.Design.VSTypeResolutionService.SystemComponentModel.Design.ITypeResolutionService.ReferenceAssembly

I am using Visual Studio 2013. All my references are present. I tried to create a new Project Telerik ; i'm able to use a RadgridView in the new one.

GridView

answered on 01 Dec 2017

0 answers

103 views

Drag and drop from RadListView to RadGridView

private BindingSource _bindingSource; 
 DataTable gridViewDataTable = new DataTable(); 
 
 public SocPersonal() 
 { 
 InitializeComponent(); BaseGridBehavior gridBehavior = this.radGridView2.GridBehavior as BaseGridBehavior; gridBehavior.UnregisterBehavior(typeof(GridViewDataRowInfo)); gridBehavior.RegisterBehavior(typeof(GridViewDataRowInfo), new CustomRowGridBehavior()); RadDragDropService dragDropService = radGridView2.GridViewElement.GetService<RadDragDropService>(); dragDropService.PreviewDragStart += svc_PreviewDragStart; dragDropService.PreviewDragOver += svc_PreviewDragOver; dragDropService.PreviewDragDrop += svc_PreviewDragDrop; gridViewDataTable.Columns.Add("key_socRabotnik", typeof(string)); gridViewDataTable.Columns.Add("[ФИО]", typeof(string)); radListView1.ListViewElement.DragDropService.PreviewDragOver += PreviewDragOver; radListView1.ListViewElement.DragDropService.PreviewDragDrop += PreviewDragDrop; MyRussionRadGridLocalizationProvider.CurrentProvider = new MyRussionRadGridLocalizationProvider(); radGridView1.TableElement.Text = MyRussionRadGridLocalizationProvider.TableElementText; CheckForIllegalCrossThreadCalls = false; 
 HandleCreated += Form_HandleCreated; 
 } 
 
 #region Drop 
 private void svc_PreviewDragStart(object sender, PreviewDragStartEventArgs e) 
 { 
 e.CanStart = true; 
 } 
 
 private void svc_PreviewDragOver(object sender, RadDragOverEventArgs e) 
 { 
 if (e.DragInstance is GridDataRowElement) 
 { 
 e.CanDrop = e.HitTarget is DetailListViewDataCellElement || 
 e.HitTarget is DetailListViewElement; 
 } 
 } 
 
 private void svc_PreviewDragDrop(object sender, RadDropEventArgs e) 
 { 
 DetailListViewDataCellElement targetCell = e.HitTarget as DetailListViewDataCellElement; 
 DetailListViewElement targetElement = e.HitTarget as DetailListViewElement; 
 GridDataRowElement draggedRow = e.DragInstance as GridDataRowElement; 
 
 if (draggedRow == null) 
 { 
 return; 
 } 
 ListViewDataItem item = new ListViewDataItem(); 
 DataRow draggedDataBoundItem = ((DataRowView)draggedRow.RowInfo.DataBoundItem).Row; 
 if (targetElement != null) 
 { 
 ((RadListViewElement)targetElement.Parent).Items.Add(item); 
 } 
 if (targetCell != null) 
 { 
 BaseListViewVisualItem targetVisualItem = targetCell.RowElement; 
 
 int insertIndex = targetCell.Row.ListView.Items.IndexOf(targetVisualItem.Data); 
 if (insertIndex > -1) 
 { 
 targetCell.Row.ListView.Items.Insert(insertIndex, item); 
 } 
 } 
 item["key_socRabotnik"] = draggedDataBoundItem["key_socRabotnik"]; 
 item["[ФИО]"] = draggedDataBoundItem["[ФИО]"]; 
 
 gridViewDataTable.Rows.Remove(draggedDataBoundItem); 
 } 
 
 private void PreviewDragOver(object sender, RadDragOverEventArgs e) 
 { 
 e.CanDrop = e.HitTarget is GridTableElement || 
 e.HitTarget is GridDataRowElement; 
 } 
 
 private void PreviewDragDrop(object sender, RadDropEventArgs e) 
 { 
 BaseListViewVisualItem draggedItem = e.DragInstance as BaseListViewVisualItem; 
 GridDataRowElement rowElement = e.HitTarget as GridDataRowElement; 
 GridTableElement tableElement = e.HitTarget as GridTableElement; 
 
 if (rowElement == null && tableElement == null) 
 { 
 return; 
 } 
 e.Handled = true; 
 DataRow newRow = gridViewDataTable.NewRow(); 
 newRow["key_socRabotnik"] = draggedItem.Data["key_socRabotnik"]; 
 newRow["[ФИО]"] = draggedItem.Data["[ФИО]"]; 
 if (tableElement != null) 
 { 
 gridViewDataTable.Rows.Add(newRow); 
 } 
 
 if (rowElement != null) 
 { 
 GridViewRowInfo targetRow = rowElement.RowInfo; 
 
 int insertIndex = this.radGridView2.Rows.IndexOf(targetRow); 
 if (insertIndex > -1) 
 { 
 gridViewDataTable.Rows.InsertAt(newRow, insertIndex); 
 } 
 } 
 
 
 this.radListView1.Items.Remove(draggedItem.Data); 
 } private void fillTheDataGrid() 
 { 
 var commandServer = new CommandServer(); 
 try 
 { 
 radGridView2.Invoke(new MethodInvoker(delegate () 
 { 
 _bindingSource = new BindingSource { DataSource = commandServer.GetDataGridSet(@"select key_socRabotnik, fio as [ФИО] 
 from socRabotnik 
 where statusDel = 0 
 order by fio").Tables[0] }; 
 radGridView2.DataSource = _bindingSource; 
 
 if (radGridView2.Columns.Count > 0) 
 { 
 radGridView2.Columns[0].IsVisible = false; 
 radGridView2.AutoSizeColumnsMode = GridViewAutoSizeColumnsMode.Fill; 
 } 
 
 _bindingSource = new BindingSource { DataSource = commandServer.GetDataGridSet(@"select key_socRabotnik, fio as [ФИО] 
 from socRabotnik left join spec_soc on key_socRabotnik = fk_socRabotnik 
 where fk_socRabotnik is null").Tables[0] }; 
 radListView1.DataSource = _bindingSource; 
 radListView1.DisplayMember = "[ФИО]"; 
 radListView1.ValueMember = "[ФИО]"; 
 radListView1.Columns[0].Visible = false; 
 })); 
 } 
 catch (Exception ex) 
 { 
 CommandClient commandClient = new CommandClient(); 
 commandClient.WriteFileError(ex, null); 
 } 
 }

ListView to GridView: It is dragged, deleted, but not in the grid.
GridView to ListView: error image

ListView

asked on 30 Nov 2017

1 answer

182 views

Listview IconView Image Performance

Dear, I need to load 03 listview simultaneously and these same handle many records in the iconview, what would be the best way to load and streamline this task by saving the path of the image and then assigning it by using the itemdatabound property or saving the image in arraybyte and then assigning it in the customvisualitem creation.

Thank you for your attention.

regards

ListView

answered on 30 Nov 2017

0 answers

110 views

Column chooser item formatting (height)

Hi,

I found the was to left-align the name of the column using the following code :

private void radGrid_ColumnChooserItemElementCreating(object sender, ColumnChooserItemElementCreatingEventArgs e)
{
e.ItemElement.TextAlignment = ContentAlignment.MiddleLeft;
}

But I did found how to set the height of the elements in the list of columns (see screenshot attached).

Is there any way to do it ?

Thank you.

GridView

asked on 29 Nov 2017

1 answer

716 views

Remove rows from grid

Hi. I am trying to remove rows and I get "formatException".

I've try to remove the rows like that:

grid.GridElement.BeginUpdate();

foreach (GridViewDataRowInfo row in grid.Rows)
{
if (row.Cells[1].Value.ToString() == "False")
{
grid.Rows.Remove(row);
}
}

grid.GridElement.EndUpdate();

AND like that:

grid.GridElement.BeginUpdate();

IEnumerable<GridViewDataRowInfo> uncheckedRows = grid.Rows.Where<GridViewDataRowInfo>(row => row.Cells[1].Value.ToString() == "False");

foreach (GridViewDataRowInfo uncheckedRow in uncheckedRows)
grid.Rows.Remove(uncheckedRow);

grid.GridElement.EndUpdate();

BOTH WAYS DON'T WORK...

GridView

answered on 28 Nov 2017

5 answers

389 views

RadDropDownList and ToolTipText

Hi,

Any reason for the ListElement of RadDropDownList showing the ToolTip when we have the RadDropDownList.ShowItemToolTips = False?

Another thing how we can access to the RadDropDownList control from the ListElement control? Imagine we catch the MouseHover event from ListElement and want to access to the parent control (the RadDropDownList control)?

Thank You

DropDownList

answered on 28 Nov 2017

2 answers

238 views

[Solved] Time Picker in DateTimePicker do not affect ReadOnly property

Hello Telerik Team,

I'm using DateTimePicker as follow,

radDateTimePicker1.DateTimePickerElement.ShowTimePicker = true;

radDateTimePicker1.Format = DateTimePickerFormat.Custom;

radDateTimePicker1.DateTimePickerElement.CalendarSize = new Size(330, 250);

radDateTimePicker1.ReadOnly = true;

Time value in EditBox cannot edit. ReadOnly property working ok.

But Time value can be changed from dropdown's picker.

How can I fix this issue.

Calendar, DateTimePicker, TimePicker and Clock

answered on 28 Nov 2017

1 answer

158 views

Theming selection state for treeview items

I have skinned my Treeview such that it has flat white icons and white text on a blue background. I'd like them to invert colors for selection (blue on a white background).

Using Visual Style Builder, is it possible to get the icons to "invert" somehow when selected? Or what is the best way to achieve this?

If not, will I need to track selection myself and load "inverted" images at the appropriate time?

Thanks,

Dave

Treeview

answered on 27 Nov 2017

3 answers

358 views

Keeping track of edited rows

I might be a newbie to Telerik Winform controls.

I have a rad grid view displaying from a data source. for each row there are two buttons i.e approve and reject. I need to selectively approve or reject each row. On Click of a save button i have to save them back to database.

I have Boolean field in table to which value is based on approve or reject button. The default value is false. I want only to save the database rows that i have modified that too on save button click.Can I have any flag to selectively get only the rows modified at radgrid so that i can retrieve them and save them on save button click.

I worked on it did not work out, in My version because every save would save each and every rows if was modified on rad data grid or not.

I'd be thankful if someone helps me in this issue.

GridView

answered on 27 Nov 2017