Questions on UI for WinForms Forum

2 answers

250 views

I want to change the
backcolor of a listViewDataItem, then later on, change it back to the standard
color (ie white if it's not selected or the standard selection color of it's
selected).

I'm using this code to change the backcolor:

previewedListItem.BackColor = Color.Gold
previewedListItem.BackColor2 = Color.Gold
previewedListItem.BackColor3 = Color.Gold
previewedListItem.BackColor4 = Color.Gold

and this code to change it back:

previewedListItem.BackColor = Color.FromArgb(0, 0, 0, 0)
previewedListItem.BackColor2 = Color.FromArgb(0, 0, 0, 0)
previewedListItem.BackColor3 = Color.FromArgb(0, 0, 0, 0)
previewedListItem.BackColor4 = Color.FromArgb(0, 0, 0, 0)

The problem is that once I've changed it back, if the user selects that item,
it stays white instead of showing the selection color. How can I change the
color back in a way that will still show the selection color if the item is
selected?

ListView

answered on 12 Nov 2014

1 answer

127 views

AllowCustomText

In the UI for ASP.Net, the drop down control has an option 'AllowCustomText' which seems to be what I need for the UI for WinForms. My users want to be able to select an item from a drop down box or type in a value that is not in the list. I do not want the value they enter to be saved in the list. Right now, when I set the drop down to 'DropDown' (as opposed to DropDownList) the user can edit the text, but as soon as they tab off the cell, it replaces what they typed with the nearest entry in the drop down.

I have seen some threads that discuss solutions, but they seem so cumbersome and all of them have the typed in value being added to the drop list.

Isn't there an easier way to implement this functionality? (I'm on UI for WinForms 2014 Q1)

GridView

answered on 10 Nov 2014

6 answers

146 views

SortOrder=Ascending + Drag'n'Drop

This (to me) seems to be a bit of an odd one.

I have a RadTreeView, if I set the SortOrder to None, then Drag'n'Drop features work .. as i'd expect.

If I set the SortOrder to Ascending; then Drag'n'Drop appears to be switched off?

Am I missing something? Is there a setting I need, or do I have to either implement my own custom sorting or custom drag'n'drop?

Thanks
Brian.

Treeview

answered on 10 Nov 2014

1 answer

897 views

Change Radgridview RowFont to Bold

Hi,

Is there a way to change a rowfont to Bold based on the criteria in the records?

Example:
Where I have code "c2.RowFont.Bold = True", it gives me error that Property Bold is read only.

Private Sub SetConditions()
     Dim c1 As New ConditionalFormattingObject("Forecolor Black", ConditionTypes.Equal, "0", "20", True)
     c1.RowForeColor = Color.Black
     grd1.Columns("trd_typ").ConditionalFormattingObjectList.Add(c1)

     Dim c2 As New ConditionalFormattingObject("Forecolor Blue", ConditionTypes.Equal, "3", "", True)
     c2.RowForeColor = Color.Blue
     c2.RowFont.Bold = True
     grd1.Columns("trd_typ").ConditionalFormattingObjectList.Add(c2)

     grd1.TableElement.Update(False)
End Sub

GridView

answered on 10 Nov 2014

1 answer

102 views

How do you only show [+] hierarchy for select rows?

I want to programmatically tell the grid when to show the [+] hierarchy expand button. Can this be done or do all the rows have to have this enabled?

I have a databound master and a load-on-demand child.  My problem is that not all rows make sense to have this template shown. Below is how I am approaching this now.

GridViewTemplate template = new GridViewTemplate();
template.Columns.Add(new GridViewTextBoxColumn("Account"));
template.Columns.Add(new GridViewTextBoxColumn("CRM Opp ID"));
gvAttainment.MasterTemplate.Templates.Add(template);

template.HierarchyDataProvider = new GridViewEventDataProvider(template);
this.gvAttainment.RowSourceNeeded += new GridViewRowSourceNeededEventHandler(gvAttainment_RowSourceNeeded);

...

void gvAttainment_RowSourceNeeded(object sender, GridViewRowSourceNeededEventArgs e)
{

            switch (e.ParentRow.HierarchyLevel)
{

case 0:
                        //Query DB for data and display here
                        GridViewRowInfo row = e.Template.Rows.NewRow();
                        row.Cells["Account"].Value = from DB

GridView

answered on 10 Nov 2014

1 answer

739 views

How to get value of GridViewComboBoxColumn in Radgridview on RadGridView_ValueChanged Event ? (Windows form C#))

Hi.
I have a radgridview with a multi columns and one column is a combobox , i want to validation row when user select a item in combobox on ValueChanged event in radgrid . how can i get value a cell (combobox) in radgridview on ValueChanged event ?
plz help me .

GridView

answered on 10 Nov 2014

1 answer

137 views

Exception trying to filter by date TimeSpan column

Hi,

I get this exception trying to filter a column on a radgridview setup as "Excel-like" mode.

The colum shows the "Duration" and it is a "TimeSpan" databind type.

Any help would be appreciated.

Thanks

GridView

answered on 10 Nov 2014

3 answers

536 views

How to customise the display of listview items

Hi there.

I'm currently evaluating Telerik for an upcoming personal project.

The attached image is a very crude mock up of the type of look I'd like to achieve with the list view control, but I'm running into a few walls. Most other controls I've been able to work my way around but no so far with ListView.

I'm the control to show all items in ViewType ListView, Each item will have a thumb nail image, and I'd like to display a main header text (Series Name) with associated sub text of differing fonts and sizes. This is where I'm stumbling, any assistance would be greatly appreciated.

ListView

answered on 10 Nov 2014

5 answers

306 views

TimePicker Defaults

I'm writing a time entry program that will require a lot of time pickers on a single form. I have to do some math to add up the hours based on TimeIn and TimeOut for each shift.

I set the control to a default date and time on load. The trouble I'm having is when the user changes a time using the picker, the date reverts to the current date. The result is my date math is wrong. If the TimeIn date and time is set to 10/21/2014 1:00 AM on load and they change the time to 2:00 AM, I'm getting 10/24/2014 2:00 AM, which is a problem for my math.

1) Is there are way to format the radtimepicker to be time only and return a time only value? I don't care about the date portion at all. I'm just using these to get hours worked in a single day.

2) Alternatively, since I'm stashing the times in a database, is there someway to keep the date from changing? I can work with a fixed date for time calculations.

Thanks

Calendar, DateTimePicker, TimePicker and Clock

answered on 10 Nov 2014

3 answers

206 views

Using Composite Filters question

Based on the example here - http://www.telerik.com/help/winforms/multicolumncombobox-filtering.html
I cannot get the composite filters to work. The single filter works fine.

Based on the code below, once I bind the data to the datasource, the DisplayMember is automatically set to the first column, in this case Account. The documentation says the data is filtered by the DisplayMember field. So this works fine for the single column filter.

For the composite filter, no filtering takes place. You can see from the attached debug image that the filter is being set correctly.
> Is it because the DisplayMember is only set to "Account"?
> Can it be set to something that would work correctly (eg: Account, Description)?

If the composite filtering does not work, please remove it from the Telerik documentation or detail how to get it to work. A two column drop down is a pretty simple example. BTW I am on Winforms v2013.3.1127.40

Thanks!