Questions on UI for WinForms Forum

3 answers

96 views

When using Ctrl+Left to navigate the rich text, when the cursor is at the end of a word, or inside a word, Ctrl+Left goes to the start of the previous word. It should go to the start of the current word.

Is there a work-around for this? Can it be fixed?

RichTextBox (obsolete as of Q3 2014 SP1)

answered on 22 Aug 2014

3 answers

470 views

Multiple column in summary row

I have a grid that shows sports statistics for each player for each game. Using basketball as an example, column 1 will have the players names and after that will come FGA (field goal attempts), FG (number of field goals made), FTA (free throw attempts), FT (number of free throws made), TP (total points), etc. There might be as many as 20 columns and the column names change based on the sport and position. At the bottom of the grid in column 1 is "Game Totals". The other columns have a sum or an average of all the players in the game. We get the list of columns using a query into a datatable. How do I get this variable list of columns into the summary row?
Thank you,
Mick Mathews

GridView

answered on 22 Aug 2014

2 answers

279 views

column header text and filter button is overlapped.

Column header text and filter button is overlapped if column text is right alignment.

how to avoid it?

GridView

answered on 22 Aug 2014

1 answer

79 views

Selecting a child hierarchy gridview poulate data

In reviewing the Gridview "First Look" demo for Winforms demo, I saw a feature that I'm looking to implement. The demo does not have a code sample so I'm looking for some assistant on how to do this. Basically, I have a Hierarchy gridview bind to a SQL datasource (I did all this using the property builder).

When I click on the [+] of the parent gridview, it populate the child template gridview. Now, if I click on the row in the child gridview, I want the detail view on my right panel so that I can update/edit the data back to the datasource. Can someone provide some guidance or show me how this can be done?

See attached screen shot of the demo.

GridView

answered on 22 Aug 2014

3 answers

157 views

Spell check performance

I'm using the RadRichTextBox to replace the C# default rich text box. My hope was to be able to enable spell checking so that users would see the red wavy lines under misspelled words. However, when I set IsSpellCheckingEnabled to true, performance is unacceptable. With only a few pages of text, even scrolling the control is slow and jerky. Disabling spell check allows smooth scrolling, but defeats the purpose.

Is there anything I can do to fix this? Will performance be addressed in a later release?

RichTextBox (obsolete as of Q3 2014 SP1)

answered on 22 Aug 2014

2 answers

530 views

Hot Tracking On rows AND Columns

Hi @all, as mentioned above i am searching for solution to display hot tracking in both ... rows and colums. Is that possible ?

Thanks alot

Greetings

GridView

answered on 22 Aug 2014

0 answers

188 views

Treeview DropHighlight

When I stop to select the node, is shaded.

This time, I do the dragdrop from the ListView to Treeview.

In return the default backcolor of treeview node.

RadTreeNode _previousNode = null;

private void tvwExplorer_DragOver(object sender, DragEventArgs e)
{
if (this._previousNode != null)
{
this._previousNode.BackColor = SystemColors.HighlightText;
this._previousNode.ForeColor = SystemColors.ControlText;
}

Point pt = ((RadTreeView)sender).PointToClient(new Point(e.X, e.Y));
RadTreeNode tn = this.tvwExplorer.GetNodeAt(pt);
if (tn != null)
{
tn.BackColor = SystemColors.Highlight;
tn.ForeColor = SystemColors.HighlightText;
}
this._previousNode = tn;
}

Treeview

asked on 21 Aug 2014

1 answer

228 views

bind headers to database field value

I'm trying to make a gridview object dynamic so I don't have to update and distribute a binary every time I want to change the grid construction.

Background:
1) database table with information about reports called GeotechReports
2) database table with information about each field in GeotechReports called GeotechSetup
3) gridview object called GeotechGrid that has AutoGenerateColumns="True"
4) listbox object called GeotechHideColListbox that is bound to GeotechGrid to set the content and state of each listbox member

Information I need from a table, but can't seem to get into the grid or listbox:
1) The GeotechSetup table has two fields of interest: header and visibility. I want to somehow grab the header from this table for the grid to use so the database field name isn't the column header. Since the data is in GeotechReports and the header name is in GeotechSetup (different tables), I don't know how to make the grid understand to look at another datacontext/database table.
2) I want to change the listbox state in the same manner as above. By that I mean I want to set the state based on the visibility field in GeotechSetup.

Here's the relevant xaml:

<telerik:RadGridView Grid.Row="1" Grid.Column="0"

HorizontalAlignment="Stretch" Margin="0,0,0,0"

CanUserDeleteRows="False" CanUserInsertRows="False"

IsReadOnly="True" IsFilteringAllowed="True"

ColumnWidth="*" SelectionMode="Multiple"

SelectionUnit="FullRow" AutoGenerateColumns="True"

GroupRenderMode="Flat" AutoExpandGroups="True"

IsSynchronizedWithCurrentItem="True" x:Name="GeotechGrid"

ItemsSource="{Binding Path=ReportsToDisplay, Mode=OneWay}"

SelectedItem="{Binding Path=SelectedReport, Mode=TwoWay}">

<telerik:RadGridView.Columns/>

</telerik:RadGridView>

<ListBox ItemsSource="{Binding Columns, ElementName=GeotechGrid}"

x:Name="GeotechHideColListbox">

<ListBox.ItemTemplate>

<DataTemplate>

<CheckBox Content="{Binding Header}"

IsChecked="{Binding IsVisible, Mode=TwoWay}" />

</DataTemplate>

</ListBox.ItemTemplate>

</ListBox>

Essentially what I'm asking is how do I programmatically get access to GeotechGrid and then update each column with the header information stored in GeotechSetup? Here's what I've got so far. I know it accesses the GeotechSetups context as expected from the rlinq object because I displayed x.Fieldname and x.Fieldheader to a message box.

private void RetrieveSetupParameters()

{

foreach(GeotechSetup x in this.context.GeotechSetups.ToList())

{

// 1) x.Fieldname is the name of the field in the GeotechReport table

// 2) x.FieldHeader is what I want to be the column header text

// 3) x.FieldVisibility is what I want to use to set the listbox items

// and hide the columns I specify in the database

}

I don't need the communication to be in twoway mode. I'm only interested in doing this to set column default states on first load.

GridView

answered on 21 Aug 2014

1 answer

1.0K+ views

Displaying image in the grid column

Hi,

I've added GridViewImageColumn and am displaying the image from local path using
Bitmap.FromFile(this.Value.ToString()); as was specified in one of your links.That is working fine.

The issue here is that the images can be of varying sizes, hence the row height is not uniform. We need to either generate thumbnails for these images and then display in the column,
Is there any way to specify the height and width for the Image so that it would resize accordingly without getting truncated.

GridView

answered on 21 Aug 2014

1 answer

214 views

PdfViewer throws "Unsupported Stream Type" when using Memorystream

I'm creating a PDF file using the PdfStamper in iTextSharp and return the PDF as a memorystream object to the calling function, that is then used to display the PDF in Teleriks PDF Viewer Component for WinForms. That's the objective.Right now, creating the PDF works as it should, and it returns the data to the Calling function, and in the Calling function, should I write the memorystream contents to a file stream and then open it in Adobe Reader Everything looks just fine.However, if I choose to display the PDF in the PDF Viewer Control I just get an "Unsupported Stream type" error.Now, I figured something was wrong in the PDF data so I decided to create the PDF file, save it to disk, then read it to a memorystream in the Calling function and display that memorystream in the PDF Viewer and that, for some to me unknown reason, works.... I really can't get my head around this and need some help.

So, this won't work:

//The Calling function

private void dlgViewPDF_Load(object sender, EventArgs e)

{

MemoryStream ms = PDFcreator.GeneratePDFdata(id);

rPdfView.LoadDocument(ms);

}

//The PDF generator

public static MemoryStream GeneratePDFdata(string id)

{

MemoryStream ms = new MemoryStream();

string sTemplate = string.Concat(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location), "\\template.pdf");

PdfReader pdfReader = new PdfReader(sTemplate);

PdfStamper pdfStamper = new PdfStamper(pdfReader, ms);

PdfContentByte cb = pdfStamper.GetOverContent(1);

BaseFont baseFont = BaseFont.CreateFont(BaseFont.HELVETICA, BaseFont.CP1250, BaseFont.EMBEDDED);

BaseFont baseFontBold = BaseFont.CreateFont(BaseFont.HELVETICA_BOLD, BaseFont.CP1250, BaseFont.EMBEDDED);

cb.SetColorFill(iTextSharp.text.Color.BLACK);

cb.SetFontAndSize(baseFontBold, 14);

cb.BeginText();

cb.ShowTextAligned(PdfContentByte.ALIGN_LEFT, "TEST!!", 385, 750, 0);

cb.EndText();

cb.SetColorStroke(new CMYKColor(0f, 0f, 0f, 1f));

cb.SetColorFill(new CMYKColor(0f, 0f, 0f, 1f));

cb.MoveTo(139, 398);

cb.LineTo(146, 398);

cb.LineTo(146, 391);

cb.LineTo(139, 391);

cb.ClosePathEoFillStroke();

pdfStamper.Close();

pdfReader.Close();

return ms;

}

But this WILL work:

//The Calling function

private void dlgViewPDF_Load(object sender, EventArgs e)

{

MemoryStream ms = new MemoryStream();

FileStream file = new FileStream(@"c:\temp\testfile.pdf", FileMode.Open, FileAccess.Read);

byte[] bytes = new byte[file.Length];

file.Read(bytes, 0, (int)file.Length);

ms.Write(bytes, 0, (int)file.Length);

rPdfView.LoadDocument(ms);

}

//The PDF generator

public static void GeneratePDFdata(string id)

{

MemoryStream ms = new MemoryStream();

string sTemplate = string.Concat(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location), "\\template.pdf");

PdfReader pdfReader = new PdfReader(sTemplate);

FileStream fs = new FileStream(@"c:\temp\testfile.pdf", FileMode.Create, FileAccess.Write, FileShare.None);

PdfStamper pdfStamper = new PdfStamper(pdfReader, fs);

PdfContentByte cb = pdfStamper.GetOverContent(1);

BaseFont baseFont = BaseFont.CreateFont(BaseFont.HELVETICA, BaseFont.CP1250, BaseFont.EMBEDDED);

BaseFont baseFontBold = BaseFont.CreateFont(BaseFont.HELVETICA_BOLD, BaseFont.CP1250, BaseFont.EMBEDDED);

cb.SetColorFill(iTextSharp.text.Color.BLACK);

cb.SetFontAndSize(baseFontBold, 14);

cb.BeginText();

cb.ShowTextAligned(PdfContentByte.ALIGN_LEFT, "TEST!!", 385, 750, 0);

cb.EndText();

cb.SetColorStroke(new CMYKColor(0f, 0f, 0f, 1f));

cb.SetColorFill(new CMYKColor(0f, 0f, 0f, 1f));

cb.MoveTo(139, 398);

cb.LineTo(146, 398);

cb.LineTo(146, 391);

cb.LineTo(139, 391);

cb.ClosePathEoFillStroke();

pdfStamper.Close();

pdfReader.Close();

}

But why? I'd rather keep it all in memory and let the user save the resulting PDF if he/she so wishes than having to write it to disk and then displaying it.
Am I missing some crucial step here?

PdfViewer and PdfViewerNavigator

answered on 21 Aug 2014