Questions on UI for WinForms Forum

4 answers

171 views

In place editing gives error for self referenced tree view databinding

I have set datasource of a tree view from a data table which is self referencing i.e. it contains columns id and parent id and so data is bind successfully. Now i have set property lableEdit = true for this radtreeview. and so when I press F2 and after I enter new text to the nodes I get error "Column ColName is ReadOnly." Where ColName is DisplayMember of this radTreeView. Thank you so far fast reply.

Treeview

answered on 22 Mar 2011

9 answers

361 views

RadComboBoxEditor Multicolumn

I have a grid where I succesfully manage to open a combobox editor from a cell in a heirarchial grid and make an appropriate selection using the EditorRequired and CellBeginEdit events. The problem is that I need to have two columns in the dropdown list that is displayed. I have a comments column I wish to show beside the DisplayMember column.
As an alternative I tried to get the tootiptext to work but that doesn't seem to work either. Is this implemented?

Any help would be greatly appreciated as I'm rapidly running out of time.

GridView

answered on 22 Mar 2011

2 answers

280 views

Adding other controls to the title bar in a ribbon bar

Hi

When we were using the telerik menu items we were able to add buttons and progress bars to the menu element. We have just changed our application menu structure to use the ribbon bar.

Is it possible to add other controls to the area above the tabs on a ribbon control so that they are always visible, independent of the selected tab?

Many Thanks
Steve

RibbonBar

answered on 22 Mar 2011

2 answers

183 views

Changed selection color of caption

hi,
How can i changing the selected color of tooltabstrip caption?

Dock

answered on 22 Mar 2011

1 answer

109 views

Scale values changing on viewchange

I know you have issues with the scale values changing when I click Show Weekends, or change views. It's been noted in a few other threads. So, the questions are

Is it fixed in the new realease (2011Q1)?

What's the workaround?

Later
Art

Scheduler and Reminder

answered on 22 Mar 2011

8 answers

201 views

can't work with radcontrols after upgrade

Hello,

I just upgraded the newest release for winforms using the upgrade wizard and now i can't place any radcontrols on to the form nor can i select radcontrols already existing on my forms before the upgrade.

Please help,
francis

General Discussions

answered on 22 Mar 2011

5 answers

600 views

Selected Index Change

When populating a dropdownlist control the selected index changes, which triggers the action I have setup for the index changing... however when I initially populate the dropdownlist by setting a datatable as its datasource and defining the display and value members, the radDropDownList.SelectedItem.Value is a DataRowView object. After it's populated, though, the radDropDownList.SelectedItem.Value is an integer as it should be. Can this be explained to me why this is happening and the best way to work with it?

My code currently is this, and it will only work when I initially set the datasource:

private void someOtherMethod ()

{

sysParentDropDown.DataSource = dt;

sysParentDropDown.DisplayMember = "name";

sysParentDropDown.ValueMember = "panelid";

sysParentDropDown.SelectedIndex = -1;

}

private void sysParentDropDown_SelectedIndexChanged(object sender, Telerik.WinControls.UI.Data.PositionChangedEventArgs e)

{

if (this.sysParentDropDown.SelectedIndex > -1)

{

sysDeviceDropDown.Enabled = true;

try

{

sysDeviceDropDown.DataSource = null;

sysDeviceDropDown.Text = null;

sysInputDropDown.DataSource = null;

sysInputDropDown.Text = null;

DataRowView drv = (DataRowView)this.sysParentDropDown.SelectedItem.Value;

string s = "(panelid = " + drv.Row["panelid"].ToString() + ") AND (devid <> 0) AND (inputdevid = 0)";

DataRow[] foundRows = deviceNames.Select(s, "name asc");

DataTable dt = new DataTable("temp");

dt.Columns.Add("name");

dt.Columns.Add("devid");

foreach (DataRow dr in foundRows)

{

dt.ImportRow(dr);

}

DataRow row = dt.NewRow();

row["name"] = "";

row["devid"] = " ";

dt.Rows.InsertAt(row, 0);

sysDeviceDropDown.DisplayMember = "name";

sysDeviceDropDown.ValueMember = "devid";

sysDeviceDropDown.DataSource = dt;

}

catch (Exception ex)

{

MessageBox.Show(ex.Message);

}

else

{

sysDeviceDropDown.Enabled = false;

sysDeviceDropDown.SelectedText = null;

sysInputDropDown.Enabled = false;

sysInputDropDown.SelectedText = null;

}

Thanks for your time

DropDownList

answered on 22 Mar 2011

16 answers

617 views

[Solved] Remove empty line

hi,
I have a RadTextBox in MultiLine mode with a NullText. I add text with my code, but I have always a empty line at the end.
How can I remove that? Sounds as a pretty easy task, but for some reason it doesnot work for me, the empty line at the end is never removed.
Regards, Andreas

TextBox

answered on 22 Mar 2011

1 answer

106 views

Edit entity in dropdown column

Hello,

I have a scenario where I need to have cell text to display one databound field from an entity property, but when in edit mode I would like to use a dropdownlist to change the underlying entity itself and not the value being displayed.

For example my entity in simple terms is as follows:

Vehicle (Main databound entity)
-- Vehicle.Make (relates to Make entity)
-- Vehicle.Model (relates to Make entity)
-- Vehicle.Year (relates to Year entity)
-- Vehicle.Region (relates to Region entity)

Make
-- Make.MakeID
-- Make.MakeName

Model
-- Model.ModelID
-- Model.ModelName

Year
-- Year.YearID

Region
-- RegionID
-- RegionAbbr
-- RegionFullName

I would like to have for example a Region column that displays Region.RegionAbbr in the cell text, but when entering edit mode give a list bound to Region enities. These entries should be bound to a List<Region> and displaymember should be set to RegionAbbr for display purposes. When an entity is selected from the dropdown, instead of altering Region.RegionAbbr I would like to intercept the change and assign the Dropdownlist DataBoundItem to the Vehicle.Region entity.

Can this be done?

GridView

answered on 22 Mar 2011

1 answer

122 views

Rapid entry of new rows

Greetings,

After adding a new row, how can I place the cursor in the first column in the new row position? I have tried the following but it doesn't work:

private void gv_UserAddedRow(object sender, GridViewRowEventArgs e)

{

gv.CurrentRow = gv.MasterView.TableAddNewRow;

gv.CurrentColumn = gv.Columns[0];

gv.BeginEdit();

}

GridView

answered on 22 Mar 2011