Re: DataGrid selection - C# Discussion Boards

21-Aug-04 6:56

Is it possible to select full row in DataGrid instead of cells?

DougW4821-Aug-04 7:04

DougW48

21-Aug-04 7:04

Click the row header

J.a.c.k21-Aug-04 10:23

21-Aug-04 10:23

Question is incorrect, I don't want to select full row, I want to disable selecting of single cell,so user must always select full row. Is this possible?

Thanks for any help

Jay Shankar22-Aug-04 19:44

22-Aug-04 19:44

Paste the below code in MouseUp. Will solve your purpose.

private void DataGrid1_MouseUp(object sender, System.Windows.Forms.MouseEventArgs e)
{


	System.Drawing.Point pt = new Point(e.X, e.Y); 

	DataGrid.HitTestInfo hti = DataGrid1.HitTest(pt); 

	if ( e.Button ==MouseButtons.Left) // left button allowed only.
	{
		if(hti.Type == DataGrid.HitTestType.Cell) 

		{ 

			DataGrid1.CurrentCell = new DataGridCell(hti.Row, hti.Column); 

			DataGrid1.Select(hti.Row); 

		} 
	}

}

Do revert back whether it could solve your purpose or not.

Regards,

Jay.

J.a.c.k23-Aug-04 3:38

23-Aug-04 3:38

Thanks alot this works, but now when I click on cell
program first selects whole text in cell,
and then selects full row.
I tryed putting all code in MouseDown, and
"DataGrid.Select(hti.Row)" in MouseUp,
this almost solved the issue but selection is stil visible.
Can I avoid this?

Regards,

J.a.c.k

Jay Shankar23-Aug-04 15:55

23-Aug-04 15:55

Hi Jack,
I am sorry I could not get your response completely. Will you please ellaborate what do you mean by stating "this almost solved the issue but selection is stil visible.
Can I avoid this? "

Last time when I gave you the code. I had not checked whether it is working properly or not. Today I made a demo application to test the code. It works for me.

I am not sure but please check whether you have changed / modified some of the dataGrid properties like SelectionBackColor , SelectionForeColor etc..

Regards,

Jay.

J.a.c.k24-Aug-04 1:04

24-Aug-04 1:04

Hi Jay,

My English is not very well but I'll try to explain:

Code works fine and it solved problem, but when I click somewhere in grid program selects text in that cell like before I entered your code and then it selects complete row (all selection colors are set). So selection doesn't look nice, I was wondering can this be avoided?

Thanks for your time.

Regards,

J.a.c.k

Jay Shankar25-Aug-04 1:07

25-Aug-04 1:07

Hi Jack,
I got your problem.
This can be solved by p/invoking LockWindowUpdate.
In MouseDown you lock the window update and in MouseUp you need to unlock it.
Please revert back whether you could do as mentioned above.
Otherwise I will send you the code showing How to do it?

Regards,

Jay.

J.a.c.k26-Aug-04 5:48

26-Aug-04 5:48

Thanks Jay it works, just one more question:

How can I select first row of DataGrid in form_load event, if I could simulate click on first row then my mouse_up and mouse_down events would apply on that row. Is there an easy way of doing this?

Regards,

J.a.c.k

Jay Shankar26-Aug-04 17:49

Saving Time from a DataGrid

26-Aug-04 17:49

Simply call myDataGrid.Select(0), as below:

if(myDataGrid.VisibleRowCount > 0)
{
	myDataGrid.Select(0);
}

CarpyDog21-Aug-04 5:11

CarpyDog

21-Aug-04 5:11

I can save a date but not a time like 11:01 any ideas, the grid is bound to a wizard generated dataset

Thanks for any help

jnc

Re: Saving Time from a DataGrid

J.a.c.k21-Aug-04 22:15

Re: Saving Time from a DataGrid

21-Aug-04 22:15

How do you mean you can't save time? Explain!
Confused | :confused:

Anonymous22-Aug-04 0:26

Anonymous

22-Aug-04 0:26

Many thanks for your reply
I have a test app with a bound grid a number of columns two are Time

I have a seperate routine which defines the columns of the grid
for the relevant column
DataGridTableStyle ItemList= new DataGridTableStyle();
ItemList.MappingName="TblEventitems";

DataGridTextBoxColumn Col3=new DataGridTextBoxColumn ();
Col3.Headertext="Start";
Col3.MappingName="EIStart";
Col3.Format="HH:mm";
Col3.NullText="00:00";
Col3.Width=50;
Col3.Alignment=HorizontalAlignment.Center;

ItemList.GridColumnStyles.Add(Col3);
DataGrid1.TableStyles.Add(ItemList);

other columns save OK even for the same record but the time remains 00:00 I have tried removing the NullText format

The Date saves OK (which I don't need) but the time is 00:00 If I change the time directly in the table it displays Ok in the grid but then I get a Concurrency Violation if I try to update

Re: Saving Time from a DataGrid

sreejith ss nair22-Aug-04 3:48

sreejith ss nair

22-Aug-04 3:48

hi,

You can show time on your datagrid. For more details view this site
datagrid in codeproject

**************************
S r e e j i t h N a i r
**************************

RichTextBox - SaveFile problem

QzRz21-Aug-04 1:20

QzRz

21-Aug-04 1:20

Hi...

I have made a RichTextBox and wants to save the text...!
but it keep throws an error..!
My code is like this...

RichTextBox TextTest = new RichTextBox();
TextTest.Multiline = true;
TextTest.Text = "Test on savint" + "\n";
TextTest.Text += "here is something" + "\n";
TextTest.Text += "And some more" + "\n";

Stream TextSave;
SaveFileDialog spil = new SaveFileDialog();
spil.Filter = "TXT fil|*.txt|Alle filer|*.*";
spil.Title = "Gem fil som tekstfil";
spil.InitialDirectory = Directory.GetCurrentDirectory();
if(spil.ShowDialog() == DialogResult.OK)
{
if((TextSave= spil.OpenFile()) != null)
{
TextTest.SaveFile(TextSave, RichTextBoxStreamType.PlainText);
TextSave.Close();
}
}

But it trows an errer -> System.NullReferenceException: Object no set to an instance of an object!

Can anyone help me what to do?

QzRz

leppie21-Aug-04 4:48

leppie

21-Aug-04 4:48

QzRz wrote:
But it trows an errer -> System.NullReferenceException: Object no set to an instance of an object!

At what line>?

^{top secret xacc-ide 0.0.1}

QzRz22-Aug-04 8:25

QzRz

22-Aug-04 8:25

Hi.. sorry i didnt write...

The error is thrown here -> TextTest.SaveFile(TextSave, RichTextBoxStreamType.PlainText);

QzRz

David Salter22-Aug-04 11:59

David Salter

22-Aug-04 11:59

You haven't initialized TextSave

store your internet favourites online - www.my-faves.co.uk

QzRz23-Aug-04 4:07

QzRz

23-Aug-04 4:07

Doh...! I forgot that...!

Thanks alot..!

QzRz