Questions on UI for WinForms Forum

2 answers

129 views

Hi,

I have a RadTrackBarElement hosted in a CommandBarHostItem. It displays correctly, and I have configured certain properties such as removing the tickmarks etc. However, I just cannot get the BackColor of the trackbar to take on the colour of the parent item i.e. the CommandBarStrip it is hosted in. The CommandBarHostItem.BackColor is at it's default which appears to be Color.Transparent.

How do I set the BackColor of the TrackBar so that it actually changes? If I look through VSB, it appears that RadTrackBarElement.BackColor is all that's required, but this doesn't work.

Cheers,

Steven

TrackBar

answered on 27 Oct 2011

5 answers

466 views

[Solved] Am I using data binding correctly? (Adding columns to data table)

I have a data table object that I bind a gridview to. During runtime, I'd like to give the user an option to add a column to the gridview. Now ideally the way I thought it would work was if I add a column to the Data Table object that the grid view is bound to, it would automatically add that column to the gridview because of the data binding. But when I try that, only the Data Table is updated with the new column and not the GridView. Am I not using databinding correctly?

Thanks

GridView

answered on 27 Oct 2011

1 answer

240 views

Layout problems

Hi,
I have a problem when loading a layout configuration file im my application at startup and when I choose to change layout:
My layout configuration is a XML file and i use a RadDock and the method LoadFromXml(path), where path is where the complete path where the layout configuration file is present (*.xml).
The file is present and the layout is correctly loaded, but the application performs a bad animation during the layout update.
My Goal is to hide the layout changing animations and to show only the final result with the windows correctly positioned on the RadDock control.
Is there a way to build the layout without showing the intermediate state of the creation process of the layout, but only the final result?

Dock

answered on 26 Oct 2011

2 answers

210 views

Remove RadRichTextBox Cursor

Hi

I'm trying to use a telerik RadRichTextBox for my windows form. Is there a way I can remove the cursor from the control after inserting the value using the following line:

RADRichTextBox1.Insert('xxx')

RADRichTextBox2.Insert('yyyy')

Please see the attachment for reference.

RichTextBox (obsolete as of Q3 2014 SP1)

answered on 26 Oct 2011

2 answers

206 views

Custom Control - Image Position

Hi,

I was trying to write a custom column having textbox and an image to be useds as lookup column. I tried following code and it work perfectly except the image did not appear in center. Please advise.

void radGridView1_CellEditorInitialized(object sender, Telerik.WinControls.UI.GridViewCellEventArgs e)

{

if (e.Column.Name == "Lookup")

{

RadImageItem imgElement;

imgElement = new RadImageItem();

imgElement.Margin = new Padding(0, 2, 0, 0);

imgElement.Alignment = ContentAlignment.MiddleCenter;

imgElement.Image = Properties.Resources.hd_find.ToBitmap();

//imgElement.MinSize = new Size(20, 5);

imgElement.Size = new Size(50, 5);

imgElement.AutoSize = false;

//imgElement.AutoSizeMode = RadAutoSizeMode.FitToAvailableSize;

this.radGridView1.CurrentCell.Children.Add(imgElement);

if (!tbSubscribed)

{

RadTextBoxEditor tbEditor = this.radGridView1.ActiveEditor as RadTextBoxEditor;

if (tbEditor != null)

{

tbSubscribed = true;

RadTextBoxEditorElement tbElement = (RadTextBoxEditorElement)tbEditor.EditorElement;

tbElement.KeyDown += new KeyEventHandler(tbElement_KeyDown);

}

void radGridView1_CellEndEdit(object sender, GridViewCellEventArgs e)

{

if (e.Column.Name == "Lookup")

{

if (this.radGridView1.CurrentCell.Children.Count == 1)

{

this.radGridView1.CurrentCell.Children.RemoveAt(0);

}

void tbElement_KeyDown(object sender, KeyEventArgs e)

{

if (e.KeyCode == Keys.F1)

{

((RadTextBoxEditorElement)sender).Text = "Default text";

}

void radGridView1_CreateCell(object sender, Telerik.WinControls.UI.GridViewCreateCellEventArgs e)

{

if (e.Row is GridDataRowElement)

{

if (e.Column.Name == "Lookup")

{

e.CellType = typeof(RadTextBoxExtCellElement);

}

public class RadTextBoxExtCellElement : GridDataCellElement

{

private int imageWidth = 30;

private int imagePadding = 2;

public RadTextBoxExtCellElement(GridViewColumn column, GridRowElement row)

: base(column, row)

{

}

protected override Type ThemeEffectiveType

{

get

{

return typeof(GridDataCellElement);

}

protected override SizeF ArrangeOverride(SizeF finalSize)

{

base.ArrangeOverride(finalSize);

if (this.Children.Count == 2)

{

RectangleF rect = GetClientRectangle(finalSize);

RectangleF rectEdit = new RectangleF(rect.X, rect.Y, rect.Width - (imageWidth + imagePadding), rect.Height);

RectangleF rectImage = new RectangleF(rectEdit.Right + imagePadding, rect.Y, imageWidth, rect.Y);

this.Children[0].Arrange(rectEdit);

this.Children[1].Arrange(rectImage);

}

return finalSize;

}

Thanks,
devoas

GridView

answered on 26 Oct 2011

0 answers

79 views

Populating a group of ImageButton's with Images loaded from SQL Server

Hi, I need to program the following:

I have a list <li> of ASP ImageButton(s) which I want to set their ImageURL properties with images loaded from a SQL Server database.

I've seen people implemeent it in the HTML markup of the using <? Eval("Image"); ?>

That seems to be the approach I am looking for but don't know what else to set.

I have loaded a DataTable object containing just a column-field of type Binary holding Images.

Please advise. Please provide detail examples if possible. :)

General Discussions

asked on 26 Oct 2011

1 answer

125 views

[Solved] RedDataGridView and Grouping in Virual Mode

Hello,
I have problem with grouping in the RadDataGridView. In my project the grid must be in the virtual mode: (VirtualMode = true) (filling some cells are taken from a list; FieldName property cannot be used), but grouping by some parameter (in the grid) is not working in this mode, since Grouping property is joined with bindingSource controller, which I cannot use (If I understood well the functionality). Thus, it is possible to group data in the virtual mode? If it does, could someone attache a piece of code for me?
Thank.

GridView

answered on 26 Oct 2011

1 answer

127 views

[Solved] Gridview Column Index Error

I upgrade my telerik version from 2010 Q1 to 2011 Q1

After that there is a error

Error 241 Property or indexer 'Telerik.WinControls.UI.GridViewColumn.Index' cannot be assigned to -- it is read only

Sooo I want to know how I can fix this Issue......

Pls let me know if there is a another way to set column index

GridView

answered on 26 Oct 2011

1 answer

231 views

[Solved] Limiting Entry to values contained in ComboBox

Hello,

We are using a MultiColumn ComboBox for a drop down list in our app.

I'd like the user to only be able to enter values that are contained in the list.

Currently, they can type anything they like in the box, and save it.

Of course, they can also use their mouse to select an item, but we'd like to prevent them from saving invalid data.

Thanks,

--shawn

MultiColumn ComboBox

answered on 24 Oct 2011

6 answers

537 views

[Solved] How to seach for text in a column

Is there a simple way to search a column for a specified text and then select the first (then next) row with the text, if found?

(I am aware of the Filter functionality, but that is not what I need here.)

I'm having a hard time adjusting to the object model of the RadGrid, being used to such simple things as MSFlexGrid.TextMatrix(iRow, iCol).

Can you point me to a grahic view of the RadGrid object model?

Finn

GridView

answered on 24 Oct 2011