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1 answer
164 views
hi, I want to have a tool tip...or just description that pops up when the mouse is hovered over a column header on the winform gridview
can someone point me in the right direction, or show an example....
thanks
Martin Vasilev
Telerik team
 answered on 15 Mar 2010
1 answer
168 views
I have the free Audacity audio file editor program.  When you load in an audio file, the program displays a waveform of the audio.  You can mark an area on the waveform by clicking on the wave form with the cursor and draging the cursor horizontally.  This causes the area you selected to have a darker background.  It looks like a selected block.  (See attached screenshot.)

Once you've done that, you can also position the cursor on either end of the block to drag that edge of the selected portion back and forth to resize the area.

I need to implement a similar feature in my own application, with the added requirement of being able to select more than one area on the waveform at one time.

Anyone have any ideas on how I might go about this using Telerik .NET forms controls?  Maybe positioning some kind of partially transparent object over the waveform?

Thanks for any suggestions.
Nikolay
Telerik team
 answered on 15 Mar 2010
4 answers
172 views

Hi, I'm having a problem after upgrading from version 2009 Q3 SP1 to 2010. I´ve run and debbuged your "performance" example and the problem is there too, so I assume that there is a bug in the new version. 
The problem arises when I try to get the value (doing this radgridview1.Rows[0].Cells[0].Value) of any cell of the grid, I always get an empty string but it is shown correctly in the screen. It is worth mentioning that i'm using GridViewColumnTexts in my grid.

Tell me if you need more info. Hope to hear about you soon. Regards

Jack
Telerik team
 answered on 15 Mar 2010
9 answers
454 views

Hello,
I have a problem with the isPinned property on the radGrid rows :

I have to pin the first row and the first column of my grid, this works great with the first column (the first column is locked on the left of my grid) but with the first row… the first row is duplicated.

And, of course, edit of the first line don’t work like all others rows of the radGrid (click on the first or the second row edit the first row).

 

For pin rows and column I use this code (c#) :

 

if (radGridViewGrille.MasterGridViewTemplate.Rows.Count > 0 )

{radGridViewGrille.MasterGridViewTemplate.Rows[0].IsPinned = true;

}

 

if (radGridViewGrille.MasterGridViewTemplate.Columns.Count > 0 )               

{radGridViewGrille.MasterGridViewTemplate.Columns[0].IsPinned = true;

}


So the question is : How can i remove the duplication of the first row to have the same behavior than the pinned collumn? 

Regards.

 

Jack
Telerik team
 answered on 15 Mar 2010
2 answers
303 views
I am trying to conditionally enable and disable a CellElement based on the previous cells value. The code below works fine if the number of rows visible on the GridView appear all on one screen. If the rows exceed one screen and are scrollable, I get a null reference exception on "rowInfo.Cells[7].CellElement.Enabled = false;". Any ideas why it might be happening or a perhaps a better way to do this would really be helpful.

foreach ( var rowInfo in radGridView1.MasterGridViewTemplate.Rows ) 
            { 
                if ( ( !( (bool)rowInfo.Cells[6].Value ) ) ) continue
                rowInfo.Cells[7].CellElement.Enabled = false
            } 
 
 radGridView1.Columns[6].IsVisible = false
AY
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 answered on 13 Mar 2010
5 answers
215 views
I have the following situation.
        private void radMenuItem1_Click( object sender, EventArgs e )  
        {  
            dlgAssignSplits dlgSplits = new dlgAssignSplits();  
            if ( dlgSplits.ShowDialog() == DialogResult.OK )  
            {  
                //dlgSplits.Task  
                int insertAt = FindRowPosition();  
                ClipGrid gridItem = new ClipGrid();  
                List<ClipGrid> gridItemsList = UpdateClipTaskGrid();  //Gives back 6 rows  
                //gridItem = gridItemsList[insertAt];   // Changes the values in the row.  
                gridItem.Task = dlgSplits.Task;  
                gridItem.AssignedArtist = dlgSplits.Artist;  
                gridItem.AssignStatusDesc = dlgSplits.Status;  
 
                gridItemsList.Insert( insertAt, gridItem );  //gridItemsList has 7 Rows now  
 
                grdClipTask.DataSource = gridItemsList;  
                grdClipTask.Refresh();  //Form displays only 6 Rows.  
                  
                dlgSplits.Dispose();  
            }  
        } 


Please help me figure out why the stinkin grid won't update.
Anthony Terra
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 answered on 12 Mar 2010
1 answer
463 views
1.  I've added a RAD context menu manager to my form.
2.  I've added a RAD context menu to my form.
3.  I've set the RadContextMenu property of my RadGridView appropriately.

At run time, when I right-click, I still see the default context menu and not mine. 

What gives?

Interstingly enough, I've found that my context menu DOES show up if there are no rows in my grid.  As soon as there are rows in my grid, the default context menu is displayed.


...AND THEN THERE WAS LIGHT!!!!

Ok, you must open the Property Builder for the Grid View.  Then you must select the "GridViewTemplate".  Then set the "AllowCellContextMenu" to false.  This seems pretty cheesy I must say.  Alot of work just to get the context menu that I want to be shown to be displayed.  Wouldn't one property on the grid itself be sufficient...something like "UseRadContextMenu"?
Nikolay
Telerik team
 answered on 12 Mar 2010
9 answers
657 views

HI,
    I have one issue regarding RadTabStrip. I have created two pages(Page 1 and Page 2) in RadTabstrip.In both the pages i have added two Radio Buttons and One Text box.Now I have subscribed Validating event of Text boxes of both the pages. I also have subscribed TabSelecting event of RadTabStrip.
                                                  Now in my scenario if validation of current Text Box is not done,I should not be able to select different tabPage.so to achieve this i have made  args.Cancel = true; this statement in TabSelecting Event.

C# Code :

private void radTabStrip1_TabSelecting(object sender, Telerik.WinControls.UI.TabCancelEventArgs args)
        {
            if (!Valid)
            {
                args.Cancel = true;
            }
        }

Here Valid is globla variable showing i need to stop tabChange.

Problem :

Suppose now i am on Page 1 and entered some Invalid entry in TextBox and I click on  page 2. Validation fires from Text Box and force me to be on page 1. Here Page 2 is not selected.This is fine for me,But now if i made Valid Entry in Text Box then I am able to change tab but not able to click( or change) Raido button on Page 1. Here I am suppose to change or select Radio button on same page in case of valid entry in Text Box.

Dobry Zranchev
Telerik team
 answered on 12 Mar 2010
1 answer
177 views
Is there a way to filter the appointments on the calendar dynamically?  I would like the user to have a few options to select from as far as what appoinments that they see.

I tried one method of filtering which is probably not the most efficient but could not get it to work anyways. I have a dataset that was built from code.  I tried rebuilding the dataset but it does not work because I get an error message about the table already existing.  I even tried removing the relationships and datatables before rebuilding but still get errors.  I tried dataset.Reset and dataset.clear but when I try to reuse the dataset I still end up with errors when adding the tables/relationships again.

I started researching a dataViewManager but have not got that to work yet.

If anybody has any suggestions it would be appreciated.


Dobry Zranchev
Telerik team
 answered on 12 Mar 2010
2 answers
227 views
how do i know when a document is selected in RadDock? is there any event fired when the selected document window changes?

i have tried using the Selected event of documentTabStrip under the RadDock but it doesn't fire when the selection is changed
Shaihan
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 answered on 12 Mar 2010
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