Questions on UI for WinForms Forum

7 answers

1.3K+ views

Hello,

i am using the version 2009.1.9.414. and have great problems with the RadMultiColumnComboBox.
I have a ComboBox bound to a DataTable and now i want to select a Row in the ComboBox. In all other
ComboBoxes i know i would just set the SelectedValue of the ComboBox. My expectation is that the
correct row is selected and the Text of the ComboBox show the value of the DisplayMember of the Selected Row.

When i set the SelectedValue in the Telerik RadMultiColumnComboBox i get the follwoing result.
The Cell which will be found by the current Selected Row and the valuemember will be changed by the passed SelectValue.

This seems to be a bug and not a feature or a user error. Is there any workaround or is it possible to get a patch.
It is urgent because i am using telerik in a huge Project and am at the beginning time enough to change to Componentart or
Infragistics. I want to continue with Telerik so please help me.

Best regards
Stefan

MultiColumn ComboBox

answered on 29 Apr 2020

14 answers

3.5K+ views

RadDatePicker and Null values

Hello,

I've tried to find some info on this but I'm not sure what the problem really is. Overall I have a master/detail record situation.

I have a datasource bound to a RadGrid and to form items in a "detail" view above the grid. When I click a row the form items in the detail view update with the current record data. Works great, drop down's and all. However, the RadDateTime picker has me puzzled. It updates fine until it hits a record with a null value for the date. Rather than going blank it holds the last date that it received. I expected it to go blank on a null value. The datepicker supports a 'work order closed' field and will remain null until some point in the future.

Is there something i'm missing? or am I going against best practice and there is a better way?

Thanks,

Dean.

Calendar, DateTimePicker, TimePicker and Clock

answered on 29 Apr 2020

1 answer

141 views

Values added to filter popup menu tree element distinct list values don't work

I am using the Excel-like filtering in my Winforms application and I have a few GridViewComboBoxColumns that have their datasources set from stored procedures programatically instead of from the database table that I am using for the datasource for the rest of the columns. Because of this, the filters are not automatically filling in the options for these columns like they do for the columns that use the main datasource. I have used the technique described here: https://www.telerik.com/forums/custom-gridview-filter-popup to add custom options to the filters where needed, but once selected and OK is clicked, nothing happens. When I add a break point in the FilterChanging event, I see that the column has been selected as a filter source based on the Property Name, but there is no value and no expression in the filter. Is there something I have to do to format the values added to the DistinctListValues so that they pass a value and expression?

GridView

answered on 29 Apr 2020

11 answers

688 views

Summary rows on multiple group levels

I am working on rewriting our grid reporting system using the Telerik GridView. I have run into one thing I have no been able to do. When I group a report, I need to show a summary row for all group levels. I have attached an example of what I need to do. In it I am grouping on two columns: View & User Id. I show a summary row for each user (pink) and then another summary row for each view (blue).

I have tried to do the same thing with the gridview but i have only been able to show a summary row for the lowest level group.

Does any one have an suggestions on how to do this?

GridView

answered on 28 Apr 2020

3 answers

158 views

How create custom treeview for RadListFilterPopup?

First, I have prepared my data in a radTreeView control.
Then, how assign treeview to RadListFilterPopup?

Please refer the pciture from attachment.
Any way can be done?

RadHostItem h = new RadHostItem(this.radTreeView1);

void radGridView1_FilterPopupRequired2(object sender, Telerik.WinControls.UI.FilterPopupRequiredEventArgs e)
{
if (e.Column.Name == "Store")
{
e.FilterPopup = new RadListFilterPopup(this.radTreeView1, true);
}
}

GridView

answered on 28 Apr 2020

2 answers

70 views

Search / expand

Hi

I am trying to make a search function in a treeview.

Using this code will find what i am looking for:

Dim result As RadTreeNode() = RadTreeView1.FindNodes("Anders And")

result(0).RootNode.ExpandAll()
result(0).Selected = True

but all nodes are expanded, like 'expand1.png'

I would like it to look like 'expand2.png'

Kindly Peter

Treeview

answered on 28 Apr 2020

3 answers

110 views

Cut and Copy menu items are sometimes disabled

In demo editor it is possible to select text with double-click, and right-click the text, and have Cut and Copy menu items disabled in context menu. One has to be very fast, but it's not hard to reproduce it. Sometimes even Cut is enabled and Copy is disabled. Not sure if this is a bug or by design.

RichTextEditor

answered on 28 Apr 2020

3 answers

98 views

ChangeParagraphTextAlignment is over-eager to change alignment

In measured document of Word-inspired project we have to use IDocument interface. How do I add a new paragraph to document and set its text alignment without having to know the alignment of previous paragraph? ChangeParagraphTextAlignment method behaves differently based on the current paragraph alignment. If current is Center, and we "change" to Center the result is Left. If current is Left and we "change" to Left the result is Justify. The method really really wants to change the alignment.

So in my code I do InsertParagraph(), not knowing how the previous paragraph was aligned. How to center-align this new paragraph?

I suppose I can use ClearAllFormatting, but now here's the followup question. How to reuse all other paragraph properties from previous paragraph, like indentation and spacing, and just set text alignment to Center?

I could make two calls, "change" to Justify, and then to Center. Whatever was the starting state we should reach Center, but this looks like a hack to me. In case we want to set the alignment to Left we would have to make three calls to make sure we actually reach Left state (for instance "change" to Right, then Justify, then Left).I feel this should not be so complicated.

RichTextEditor

answered on 28 Apr 2020

5 answers

537 views

Custom GridView Filter Popup

Hi All -

I looked thru the forum but could find an example of what I need to do. And that is

empty the filter popup and populate it with my own entries.

For simplicity I only need 3 fields. The underlying column will contain only "A", "B", or blank/null so I would like the popup
to contain only those values. Even if the column could contain "C" or "D", I don't want to filter on that.

I know this can't be too difficult but I was unable to find an example and the code I wrote didn't work properly.

Any help appreciated.
Regards,
Hugo

GridView