Questions on UI for WinForms Forum

1 answer

250 views

LazyLoading or LoadOnDemand for GridView

Is there any way to implement LazyLoading or LoadOnDemand for GridView rather than RadTreeViews or Hierarchical Grids? Perhaps with Paging, where it only grabs data for the current page that is selected? We have pretty large recordsets being grabbed that slows down the program significantly when I need to refresh the GridView. I am currently limiting the amount or records to only the most recent entries right now but I would like to be able to search through older records without having to grab the entire list on every update of the GridView.

GridView

answered on 27 May 2016

2 answers

160 views

Requery GridView Data

I have a GridView that is bound to a IList of objects. When I add or delete items from the List I would like to reflect those changes in the GridView. I can rebind the grid by setting the DataSource to the updated IList, but I lose the filters, sorting, scroll position, and selected item. Is there a way to refresh the data without losing all the aforementioned items? I tried the Refresh() command but that did not seem to do anything. I recall in Telerik MVC there used to be a requery option, is there something similar in Winforms?

GridView

answered on 27 May 2016

1 answer

189 views

Switching from MetroTouch theme

Seems that scrollbar sizes is not updated when switching from MetroTouch to any other theme.

How to reproduce:

Create a Form, change it to RadForm.

Add RadVScrollBar, dock it to the right.

Create two buttons, add onclick handlers

System::Void radButton1_Click(System::Object^ sender, System::EventArgs^ e) {

Telerik::WinControls::ThemeResolutionService::ApplicationThemeName = "TelerikMetroTouch";

}

System::Void radButton2_Click(System::Object^ sender, System::EventArgs^ e) {

Telerik::WinControls::ThemeResolutionService::ApplicationThemeName = "Desert";

}

Press button1, then button2. The scrollbar size is bigger than expected (see screenshot)

Telerik_UI_For_WinForms_2016_1_216_Dev.msi / VisualStudio2010 / C++CLI

Themes and Visual Style Builder

answered on 26 May 2016

5 answers

180 views

Expression Evaluation Event

Hi Telerik Team,

Does the evaluation of an expression in a column generates an Event? Or is there a way to intercept the evaluation process and
substitute/enhance with my own code?

The expressions that I need to use require data points that are not found in the dataset used in the GridView, so I need a way to
intercept the evaluation to swap string variables that are not in the dataset with the actual value found within the application or a different dataset.

Regards.

GridView

answered on 26 May 2016

1 answer

137 views

Cannot change MultiColumn ComboBox's default theme.

I m using MultiColumn ComboBox in my application, the problem is I cannot change its default theme.

I tried this,



ThemeResolutionService.ApplicationThemeName = "Aqua";

and also tried,

MyColumnComboBox.ThemeName = "Aqua";

but still I can see the default theme. why it is overriding with the default theme. Please help me.

MultiColumn ComboBox

answered on 25 May 2016

2 answers

84 views

No padding when printing cells with HTMLRendering

Hello,

if I print cells with HTMLRendering the text aligns to the top left of the cell and something equivalent to padding 0;0;0;0 is used. How do you fix that?

private void BestFitRadGridView_PrintCellFormatting(object sender, PrintCellFormattingEventArgs e)

{

e.PrintCell.Font = new Font(e.PrintCell.Font.FontFamily, 7F);

e.PrintCell.EnableHtmlTextRendering = !e.Column.DisableHTMLRendering;

e.PrintCell.TextPadding = new Padding(5);

}

If i set EnableHtmlTextRendering = false the padding (set in the printstyle or on cell-level) is used as expected.

Kind regards,

Andreas

GridView

answered on 25 May 2016

1 answer

80 views

Get start and end datetime from GanttView PreviewDragStart

//GanttView PreviewDragStart

private void DragDropService_PreviewDragStart(object sender, PreviewDragStartEventArgs e)
{

if (e.DragInstance is GanttViewTaskElement)
{
e.CanStart = true;

//want to get start and end datetime
}

}

From above event how can i get Start and End datetime from e.DragInstance

GanttView

answered on 25 May 2016

4 answers

335 views

Using a Stuct as a PropertyStoreItem's Value

I'm trying to display a struct in a RadPropertyGrid (similar to the "Padding" item in the "First Look" example), but for some reason items in the struct is not displayed as an expandable item like in the "First Look" example. Instead, the value of my PropertyStoreItem is just set to a string containing namespace of my struct (see the attached screenshot). Here is the struct I'm trying to use:

namespace DSI.WorkFlow

{

struct SearchItem

{

string fromField;

string toField;

[Description("Search value.")]

[Category("Search Fields")]

[DefaultValue(null)]

[Browsable(true)]

public string FromField

{

get

{

return this.fromField;

}

set

{

this.fromField = value;

}

[Description("Search value.")]

[Category("Search Fields")]

[DefaultValue(null)]

[Browsable(true)]

public string ToField

{

get

{

return this.toField;

}

set

{

this.toField = value;

}

Do you have any idea what I'm missing?

PropertyGrid

answered on 25 May 2016

1 answer

124 views

Logo is Not Printed

I use the following code in print, but logo is not displayed:

RadPrintDocument document = new RadPrintDocument();

document.Logo = pictureBox1.Image;

document.RightHeader = "Right header";

document.AssociatedObject = grid;

RadPrintPreviewDialog preview = new RadPrintPreviewDialog(document);

preview.Show();

GridView

answered on 25 May 2016

3 answers

146 views

SelectAll

Dear Telerik,

I have RadPivotGrid and a RadChartView,

on formload, I have

this.radChartView2.DataSource = this.radPivotGrid1;

and everything works fine.

However, I want the chart to appear on chartview automatically when the form loads instead of having to select the data on the PivotGrid manualy using mouse.

I was trying to prgramatically use a method like selectall to force the chart to appear on the chartview but aparently there is no selectAll method in RadPivotGrid.

Your help is highly appreciated.

Thanks.

PivotGrid and PivotFieldList

answered on 25 May 2016