Questions on UI for WinForms Forum

4 answers

157 views

[Solved] RadGridView + Office2010Black scroller paint issue

Hello,

when i am using RadGridView with Office2010Black theme, and loading some data into, i got vertical scrollbar painted wrong. See the screenshot attached.

My grid initialization section:

private DataTable dataTable;

public Form1()

{

InitializeComponent();

radGridView1.AutoSizeRows = false;

radGridView1.AutoSizeColumnsMode = GridViewAutoSizeColumnsMode.Fill;

radGridView1.RowFormatting += radGridView1_RowFormatting;

radGridView1.ReadOnly = true;

radGridView1.ShowRowHeaderColumn = false;

radGridView1.VerticalScrollState = ScrollState.AlwaysShow;

radGridView1.ThemeName = "Office2010Black";

dataTable = new DataTable();

dataTable.Columns.Add("number", typeof(int));

dataTable.Columns.Add("descriptions", typeof(string));

radGridView1.DataSource = dataTable;

}

void radGridView1_RowFormatting(object sender, RowFormattingEventArgs e)

{

e.RowElement.RowInfo.Height = 120;

}

When loading data, i have (according to requirements) to disable the Grid control first, and enable it as soon as data loaded.
Here is an example:

private void radButton1_Click(object sender, EventArgs e)

{

radGridView1.Enabled = false;

Random rnd = new Random((int)DateTime.Now.Ticks);

dataTable.Clear();

for (int i = 0; i < rnd.Next(1000); i++)

{

DataRow row = dataTable.NewRow();

row[0] = i + 1;

row[1] = "description" + i.ToString();

dataTable.Rows.Add(row);

}

radGridView1.Enabled = true;

}

After doing so, i have wrong painting behavior of the vertical scrollbar (it is only so in Office 2010 black theme!!), as it shown on the screenshot. See second image, as it should be expected.

In addition, i have experinced that the scroller thumb does not update it's height immediately, according to the added rows count.
It will only redraw itself when user is dragging it or resizing control.

I have tried: radGridView1.Invalidate(), but it does not help.

So far workarounds are:
1) decorating code with BeginUpdate/EndUpdate does partially fix the problem, scrollbar thumb does not change it's size
2) do not disable grid when loading data - works fine for me and even updates scrollbar thumb size, but i need to disable grid before doing data loading due to application requirements.

GridView

answered on 17 Nov 2014

14 answers

443 views

Print out content

Hello,

I am new to Telerik WinControl. I’m using version 2012.3.1017.40.

I was looking for a control for displaying a chart-diagram in a Windows Forms application. I found the controls “RadChart” and “RadChartView”. Because of the advice of use the control “RadChartView” in your documentation I was making first experiences with this control the last days. As I can see so far, this control seems to be a powerful tool. Having created, configured this control and bound data to it I am looking for the possibility to print out the content of this control. In the documentation I have read that RadChartView does not support the functionality to export its content to a file. I would like to get to know if it is possible to print out the content of a “RadChartView” control anyway.

Karim el Safadi

ChartView

answered on 17 Nov 2014

4 answers

319 views

RadLabel ForeColor still gray after reenabled

When a RadLabel enters the disabled state the fore color changes to gray. However, when the RadLabel is re-enabled the fore color does not return to it's former glory, rather it stays gray forever.

I can't seem to override this behavior even with a custom theme.

Edit: I tried setting the forecolor in radLabel1_EnabledChanged, but it never fired. The problem seems to be that when a RadLabel parent's Enabled flag is set to true, the RadLabel itself is never notified of the event.

If I manually set ".Enabled = true;" for every label on my form, they restore their original ForeColors as expected.

The RadLabel is in a SplitPanel which is in a RadSplitContainer, where the RadSplitContainer is the control being disabled / enabled.

Label

answered on 14 Nov 2014

11 answers

3.0K+ views

[Solved] scroll bar position after refreshing grid

Hi,

I am working on the hierarchical grid and displaying data using self references.

My requirement is when i refresh the grid then the selectd row should be selected and the scroll bar
position should be at the same location but now when i refresh the scroll bar is moved to top of the grid.

could you please help me on the above requirement?

Thanks & Regards
Muralidhar Dasari

Code Snippet for refresh:-

using (radGridView1.DeferRefresh())

{

this.radGridView1.TableElement.Update(GridUINotifyAction.DataChanged);

this.radGridView1.TableElement.Update(GridUINotifyAction.StateChanged);

}

GridView

answered on 14 Nov 2014

1 answer

204 views

Saving theme changes in code

We are looking to alter one of the standard themes, changing some of the details as well as the colours. Once complete, it will be necessary to make other themes that are the same but based on different colours.

I'm well aware of the usage of Visual Builder, so creating an initial theme is not a problem. I also have code that finds a theme in the currently loaded application, extracts all the images and alters the colours. I believe I can then create a clone of the theme and replace the images with the re-coloured versions, assuming the following code works

foreach (Telerik.WinControls.StyleRepository repository in theme.Repositories)

{

if (repository.ItemType == "Image")

{

foreach (Telerik.WinControls.PropertySetting setting in repository.Settings)

{

if (setting.Name == "Image")

{

Bitmap bmp = GetBitMap(repository.Key);

setting.Value = bmp

}

What I'm stuck with, is how to save the altered theme back to a tssp file.

Any help would be appreciated.

Thanks
Jason

Themes and Visual Style Builder

answered on 14 Nov 2014

1 answer

108 views

Adding two rows inside one do not raise CellDoubleclick event

Hi,

I am trying to setup the grid in the way that when ther user add a new item to the grid, it show something that the following html table:

<table>
<tr>
<td>Name</td>
<td>Surname</td>
</tr>
<tr>
<td colspan ='2'>Gender</td>
</tr>
</table

Something like 2 rows in one

All works fine, when I add a new item to the grid it greate the layout correctly, but when I perform click on the cell of the second "subrow", grid do not raise CellDoubleClick event, it only raise the event if a click on the first subrow.

Any help would be appreciated.

this.radGridControlSelection.BeginInit();

this.radGridControlSelection.DataSource = this.dataList;

HtmlViewDefinition view = new HtmlViewDefinition();

this.radGridControlSelection.ViewDefinition = view;

view.RowTemplate.Rows.Add(new RowDefinition());

view.RowTemplate.Rows[0].Cells.Add(new CellDefinition("Name"));

view.RowTemplate.Rows[0].Cells.Add(new CellDefinition("Surname"));

view.RowTemplate.Rows[1].Cells.Add(new CellDefinition("Gender"));

view.RowTemplate.Rows[1].Cells[0].ColSpan = 2;

this.AsignTitlesToRadGridControlSelection();

GridView

answered on 14 Nov 2014

1 answer

114 views

DragDrop and EnableLassoSelection

Good day community,

I have some questions about usage drag and drop for multiselect rows (with EnableLassoSelection).
When I set

MultiSelect = true;

and select rows using arrows, it work very nice, but when I set





MultiSelect = true; 
EnableLassoSelection = true;

multiselect does not work, because when I selected item and try grab it listview again tries to select rows.

Somebody knows how to fix it, or may be you have some working example.

ListView

answered on 14 Nov 2014

1 answer

77 views

Added check button to form, but instance of object not in telerik form1.designer.cs?

I added a new RadCheckBox from toolbox to my form. However, the object has not been initialized/instantiated in the Form1.Designer.cs code? So I have a button on a form, but I can't use it for anything.

How can I make sure that RadCheckBox that I added to the form has an object instance in the generated Telerik code? I could try to do it myself, but I note that this class states above the InitializeComponent() the following:

/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()

So how to generate the code to make an object instance then? Please help. Thanks.

Buttons, RadioButton, CheckBox, etc

answered on 14 Nov 2014

1 answer

128 views

[Solved] Search Box

Is there a way to get the current text in the Search Box on the TableSearchRow? I know you can set the value for the search criteria but is there anyway to return the current value?

GridView

answered on 13 Nov 2014

1 answer

783 views

Make RadLabel Text Selectable For Copy and Paste

I'm displaying some information in a panel using the RadLabel. I noticed that you cannot select (i.e., drag and highlight) the RadLabel Text. Is there a setting so that the label can be highlighted for copy and paste purposes by the user?

Thank you!

Best Regards,

Ed

Label

answered on 13 Nov 2014