Approved
Last Updated: 26 Feb 2019 21:09 by Bryan Cho
Changing the DataSource or scrolling are slow.

Create a grid with more than 20 columns and add 5K rows for example. Maximize the form and try to scroll with mouse wheel. You will notice that the scrolling performance is worse compared to the normal state of the form with less visible visual elements.

Workaround: this.radGridView1.EnableFastScrolling = true; and use the scrollbar's thumb

Second workaround: use paging:  https://docs.telerik.com/devtools/winforms/gridview/paging/overview Thus, you will display as many rows as possible to display on the screen per page. Instead of scrolling, you will navigate through pages.
Completed
Last Updated: 19 Feb 2015 09:12 by Jesse Dyck
FIX. RadDropDownList- when the form is started the textbox shows the end of the text instead of the begging of it, when the used text is longer than the control length.
Completed
Last Updated: 24 Apr 2014 11:01 by Jesse Dyck
FIX. RadGroupBox AutoSize property is not taken into consideration
Completed
Last Updated: 23 Apr 2014 12:56 by ADMIN
ADMIN
Created by: Alexander
Comments: 0
Category: GridView
Type: Bug Report
15
The HeaderText of the RadGridView columns is not properly serialized in the resource file for the corresponding language.
Completed
Last Updated: 20 Aug 2015 14:43 by ADMIN
Wrapping text in ColumnsGroupViewDefinition does not affect the size of the cells.
Completed
Last Updated: 15 Feb 2014 11:03 by Jesse Dyck
ADMIN
Created by: Stefan
Comments: 1
Category: PageView
Type: Bug Report
14
RadPageView has ten pages. Each page contains TableLayoutPanel (2 columns and 10 rows) and in each cell there is RadControl (textBox, checkbox etc). 

The result is that when pages are being changed, RadPageView show slow performance. Same scenario with standard controls works well.

Further investigations on the case show this:
"I had the same issue and I found other workaround. In my case I had TableLayoutPanel with RadSplittButton in each cell and each RadSplitButon was set as Dock = Fill. If I set AutoSize = false for RadSplitButton then the performance was ok and everything looks ok too."
Completed
Last Updated: 24 Jul 2014 07:40 by Jesse Dyck
To workaround this issue you should dispose the Instance property of RadMessageBox after each show of message box. For example:

WORKAROUND: 
RadMessageBox.Show("Text");
RadMessageBox.Instance.Dispose();

If you are using themes, consider the following approach:
            RadMessageBox.SetThemeName("Windows7");
            RadMessageBox.Show("This is some long text that sometimes does not wrap as it should.");
            var field = typeof(RadMessageBox).GetField("radMessageBoxForm", BindingFlags.NonPublic | BindingFlags.Static);
            field.SetValue(null, null);
Completed
Last Updated: 05 Jun 2014 07:07 by Jesse Dyck
When pressing the tab and RadDropDownList gets focus, there is no visual feedback to see which control has the focus.
Approved
Last Updated: 18 May 2018 06:31 by ADMIN
RadRichTextEditor renders the text with a little bigger characters spacing than RadRichTextBox and MS Word.
Completed
Last Updated: 23 Apr 2014 12:56 by ADMIN
Steps to reproduce:
1. Add a form with RadPageView on it
2. Add RadPageViewPage
3. In the designer file there will be the following line: // TODO: Code generation for '' failed because of Exception 'Invalid Primitive Type: System.IntPtr. Consider using CodeObjectCreateExpression.'.
Completed
Last Updated: 12 Jun 2014 06:57 by Jesse Dyck
ADMIN
Created by: Nikolay
Comments: 2
Category: GridView
Type: Bug Report
11
RadGridView should support indexed full-text search out of the box.
Completed
Last Updated: 11 Feb 2014 13:46 by ADMIN
ADMIN
Created by: Jack
Comments: 0
Category: GridView
Type: Bug Report
11
1. Create a new project with RadGridView
2. Setup a hierarchy with a large number of rows
3. Apply grouping and expand all child views
4. Run the project and try to scroll
Completed
Last Updated: 11 Feb 2014 13:48 by ADMIN
1. Drag a RadGridView to a form and dock it to fill the form.
2. Create and set a ColumnGroupsViewDefinition to the grid
3. Add data and run the project.
4. Resize the form and you will see that grid view layout would not look properly.
Also if your resize a column group only the first column in the group is resized while all others retain their widths.

Work around:
void radGridView1_SizeChanged(object sender, EventArgs e)
{
    this.InvalidateGridLayout();
}
 
private void InvalidateGridLayout()
{
    this.bllGridView1.TableElement.ViewElement.RowLayout.InvalidateLayout();
    this.bllGridView1.TableElement.InvalidateMeasure(true);
    this.bllGridView1.TableElement.UpdateLayout();
}
Completed
Last Updated: 25 Feb 2013 08:52 by Svetlin
The RadPdfViewer does not show text when pdf document is loaded.
Completed
Last Updated: 18 Oct 2016 09:26 by ADMIN
To reproduce: please refer to the attached gif file.

The error is not reproduced each time with the Demo application. Sometimes an unhandled exception dialog appears and sometimes the application becomes unresponsive and you can not close the application with upper right X, the options to the right does not respond, you can not change demo using the list on the left. Selecting "Settings" in Property Grid section and then clicking on a boolean property (left column), scrolling using the mouse wheel, then selecting another property (with PropertyGridDropDownListEditor) or clicking around in the application (even outside of the property grid form).

Workaround:   this.radPropertyGrid1.EditorRequired += radPropertyGrid1_EditorRequired;

private void radPropertyGrid1_EditorRequired(object sender, PropertyGridEditorRequiredEventArgs e)
{
    if (e.EditorType == typeof(PropertyGridDropDownListEditor))
    {
        e.Editor = new CustomPropertyGridDropDownListEditor();
    }
}

public class CustomPropertyGridDropDownListEditor : PropertyGridDropDownListEditor
{
    public override object Value
    {
        get
        {
            PropertyGridItemElement element = this.OwnerElement as PropertyGridItemElement;
            PropertyGridItem item = element.Data as PropertyGridItem;
            if (item == null)
            {
                return null;
            }
            return base.Value;
        }
        set
        {
            base.Value = value;
        }
    }
}
Completed
Last Updated: 23 Apr 2014 12:56 by Jesse Dyck
Steps to reproduce:
1) Create a sample .html: 

<!DOCTYPE html>
<html>
<head>
<style type="text/css">
	.p { 
		margin: 0px 0px 0px 28px;
		} 
</style>
</head>
<body>
	<p>
		<span>This text should be indented</span>
	</p>
</body>
</html>

2) Initialize the HTML provider:

private static void InitHtmlFormatProvider()
        {
            htmlFormatProvider = new HtmlFormatProvider();
            var htmlExportSettings = new HtmlExportSettings();
            htmlExportSettings.DocumentExportLevel = DocumentExportLevel.Fragment;
            htmlFormatProvider.ExportSettings = htmlExportSettings;
        }

3) Import the sample .html file:

private void importFromFile_Click(object sender, EventArgs e)
        {
            string text = File.ReadAllText(@"C:\Sample1.txt");
            RadDocument document = htmlFormatProvider.Import(text);
            radRichTextBox1.Document = document;
        }

4) Export the imported document to .html file:
private void exportToFile_Click(object sender, EventArgs e)
        {
            string html = htmlFormatProvider.Export(radRichTextBox1.Document);
            File.WriteAllText(@"C:\Sample2.txt", html);
        }

Expected Result: margin: 0px 0px 0px 28px;
Actual Result: margin: 0px 0px 0px 0px;
Completed
Last Updated: 23 Apr 2014 12:56 by ADMIN
ADMIN
Created by: Alexander
Comments: 0
Category: GridView
Type: Bug Report
9
Sorting of RadGridView slows down its performance when the control is used in self-reference hierarchy mode.
Approved
Last Updated: 20 Feb 2018 13:17 by ADMIN
Controls in RadPanel redraw slowly when changing the Enabled state of the panel.

Workaround:

private void radButton1_Click(object sender, EventArgs e)
{
    if (this.radPanel1.Enabled)
    {
        this.radPanel1.Enabled = false;
    }
    else
    {
        this.radPanel1.Visible = false;
        this.radPanel1.Enabled = true;
        this.radPanel1.Visible = true;
    }
} 
 
Approved
Last Updated: 29 Mar 2019 16:16 by ADMIN
When UseCompatibleTextRendering property is set to false, the data cells overlaps the row header cells when horizontal scrolling is performed.
Completed
Last Updated: 29 Mar 2012 09:15 by Jesse Dyck
Scaling of text in RadRichTextBox does not work.
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