how change specific row back color in DataGrid? - Windows Forms Discussion Boards

jimbaloo20-Jun-07 3:46

20-Jun-07 3:46

Hi,

I have a windows forms app that contains a datagridview, with two filtered columns, some textbox columns, and a checkbox column. The filtering on the dgv is accomplished by using dropdowns on the column headers of the two filterable headers and this happens reasonably quickly.
My problem comes when I try to set the value of all the checkboxes to either checked or not checked. If I have a small number of rows in the dgv then each check operation takes about .0015 of a second. If I have a large number of rows that time jumps to 1.5 seconds per row. When I use the filters the dgv updates in about 2 seconds. I am at a loss.
The code I use to update the dgv checkbox column is:

<br />
            If btnSelectRecords.Text = FormConstants.ControlConstants.DESELECT_ALL_RECORDS Then<br />
                For Each row As DataGridViewRow In dgvLoanRecords.Rows<br />
                    row.Cells(FormConstants.GridViewConstants.SELECTED).Value = False<br />
                Next<br />
                btnSelectRecords.Text = FormConstants.ControlConstants.SELECT_ALL_RECORDS<br />
            Else<br />
                For Each row As DataGridViewRow In dgvLoanRecords.Rows<br />
                    row.Cells(FormConstants.GridViewConstants.SELECTED).Value = True<br />
                Next<br />
                btnSelectRecords.Text = FormConstants.ControlConstants.DESELECT_ALL_RECORDS<br />
            End If<br />

Can someone point me in the right direction to speed this process up.

Thanks

Jim

backgroundworker with typed dataset binding

mcdonamw19-Jun-07 17:22

mcdonamw

19-Jun-07 17:22

I currently have a single threaded application that contains a
strongly typed dataset (called dsdataset1) with 3 tables, all bound to
comboboxes on my main form.

This works in its current form (the datasets are filled on the form
load event).

I noticed a problem whereas the form doesn't draw until the datasets
are filled, so I figured I'd use the background worker component to do
the dataset filling on a seperate thread.

For some reason, I cannot get this to work properly. My program
loads, and my dataset is filled, however my comboboxes are no longer
bound to the dataset. It's driving me nuts.

I've tried passing the dataset back out during the runworkercompleted
event (i.e. dsdataset1 = ctype(e.result, dataset)), but even that
doesn't work. I even tried resetting the bindingsource.datasource for
my combobox back to the dataset after passing the dataset out, but no
go. I'm at a loss.

Any suggestions?

Printing a Form -> Texbox is emty :(

gant11219-Jun-07 4:47

gant112

19-Jun-07 4:47

Hi,
i have serious problems to print a Windows Form with some Textboxes...
The printing should work in background...
I really can't find a working solution.. so please help me!!!

' that form with textbox controls
Dim rForm As MyForm = New MyForm ()

' image to save / or to print
formImage = New Bitmap(rForm.Width, rForm.Height)
Dim rec As New Rectangle(0, 0, formImage.Width, formImage.Height)

'print the form
rForm.DrawToBitmap(formImage, rec)

'save as image
formImage.Save("d:\screen.bmp")

The code can be on c# or vb.net!!!

Thank's for your answers!!!

Re: Printing a Form -> Texbox is emty :(

atulonweb@hotmail.com20-Jun-07 23:52

atulonweb@hotmail.com

20-Jun-07 23:52

Hi

To print window form you have to use window API

This may help you

http://www.knowdotnet.com/articles/printform.html[^]

Atul Kumar

FolderBorserDialog for images

dodoxor18-Jun-07 21:29

dodoxor

18-Jun-07 21:29

Hi to everyone.In my visual c++ window form appplication, i want to open a directory (of images) and see the images in a picturebox.
I know that i can use folderborwserdialog to select the directory but when i've the path selected in the folderbrowserdialog how can i use the files in it? Have i to pass something to an imagelist??
Thanks for answers, bye .

Re: FolderBorserDialog for images

Giorgi Dalakishvili18-Jun-07 22:57

Giorgi Dalakishvili

18-Jun-07 22:57

Where do you want to show those images? If you have another form for images then you can retrieve all the images from the folder path you got using folderbrowsedialog

#region signature
my articles
#endregion

Re: FolderBorserDialog for images

dodoxor18-Jun-07 23:02

dodoxor

18-Jun-07 23:02

I've a solution...(take the directory name and gets the files in it).
String^ folderName;
array <string^>^ files;
System::Windows::Forms::DialogResult result = folderBrowserDialog1->ShowDialog();
if ( result == ::DialogResult::OK )
{
folderName = folderBrowserDialog1->SelectedPath;
}
files=System::IO::Directory::GetFiles(folderName);
if(files->Length!=0)

for(int i=0;i<files->Length;i++)
{
FileInfo^ fi = gcnew FileInfo(files[i]);
if(fi->Extension==".jpeg" || fi->Extension==".bmp"||fi->Extension==".jpg")
{
Bitmap^ cap=gcnew Bitmap(fi->FullName);
this->capture_img_box->Image=cap;

System::Threading::Thread::Sleep(1000);
this->Refresh();
Application::DoEvents();
}
}

Thanks however for the answers.
Bye.

how change specific row back color in DataGrid?

zeroonea17-Jun-07 20:51

zeroonea

17-Jun-07 20:51

how change specific row back color in DataGrid?

i have a DataGrid with some rows, how change row back color, like set row 1 with back color is red, row 2 is blue, row 3 is yellow

thanks

Re: how change specific row back color in DataGrid?

ozzyrocsdbn17-Jun-07 21:27

ozzyrocsdbn

17-Jun-07 21:27

What infomation are you showing
like a report

Re: how change specific row back color in DataGrid?

zeroonea17-Jun-07 21:51

zeroonea

17-Jun-07 21:51

no, i only want change specific row back color, and i want know how to do that ?
thanks

Re: how change specific row back color in DataGrid?

RepliCrux18-Jun-07 14:20

RepliCrux

18-Jun-07 14:20

I don't think you can do that in Windows Forms.

Re: how change specific row back color in DataGrid?

zeroonea18-Jun-07 19:09

zeroonea

18-Jun-07 19:09

i think can be done, but i don't know how?

like properties BackColor of DataGrid, it change bg color of odd number row

Re: how change specific row back color in DataGrid?

RepliCrux18-Jun-07 19:10

RepliCrux

18-Jun-07 19:10

I was just wondering because datagrid does not have a Row(s) property.

Re: how change specific row back color in DataGrid?

Stu Richardson20-Jun-07 6:30

Stu Richardson

20-Jun-07 6:30

Sorry a bit of a late reply but hopefully this will still help you.

You can set a rows color using the following line:

dataGridView1.Rows[i].DefaultCellStyle.BackColor = Color.Blue;

(where 'i' is the current row as i am assuming you will have a loop so you can set the color depending on the row index).

You can also set the default row and cell styles using the properties window however this will apply to every cell and row.

UITypeEditor and Factory Creation

Paul Selormey17-Jun-07 15:21

Paul Selormey

17-Jun-07 15:21

Hello All,
Please help me solve this problem. I want to create an editor/designer that will handle the following situation.
I have an abstract class Marker, and many different implementations that will not be exposed to the user.

The markers are created through a factory system, MarkerFactory, and I have a collection
of the markers in a Control that I will to create the editor/designer for.

<br />
public class Marker<br />
{<br />
    protected Marker(...){}<br />
} <br />
<br />
internal class AMarker : Marker<br />
{<br />
} <br />
<br />
internal class BMarker : Marker<br />
{<br />
} <br />
<br />
public class MarkerFactory<br />
{<br />
    public Marker Create(...) {return newMarker;}<br />
}<br />
<br />
public class MarkerControl : Control<br />
{<br />
  [MarkerDesigner]<br />
  [DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]<br />
   public IList<Marker> Markers<br />
   {<br />
       get{ return markerList;}<br />
   }<br />
} <br />

Any guide/hint as to how I could create such an UITypeEditor, that will work with the
factory system.

Best regards,

Paul.

-- modified at 10:40 Monday 18th June, 2007

Jesus Christ is LOVE! Please tell somebody.

Re: Selected item count in a listbox

Dave Kreskowiak15-Jun-07 15:10

Dave Kreskowiak

15-Jun-07 15:10

Please don't cross post in multiple forums.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007

Re: Selected item count in a listbox

Paul Conrad17-Jun-07 6:30

Paul Conrad

17-Jun-07 6:30

I thought I saw this question earlier in another forum :->

"The clue train passed his station without stopping." - John Simmons / outlaw programmer

Time editor .NET Windows Forms control (Please !)

NicoJS15-Jun-07 4:13

NicoJS

15-Jun-07 4:13

I cannot believe that in this day and age I cannot find a control to edit time.
There are controls which can almost make coffee, but not one where a user can easily enter the time.
I am not talking about the 13:45:65 PM thing where the user must select each two digit pair,
edit it or run the minute spinner buttons. It must be easier.
Like a clock view where you drag the hour, minute and seconds hands, and it snaps to every 1,5,10,15,30,60 or whatever minutes
and you can select Now with one click, and so on.. Surely nothing compared to making coffee.

Am I looking in the wrong places ?

Please help.

Re: Time editor .NET Windows Forms control (Please !)

tantoun15-Jun-07 4:34

tantoun

15-Jun-07 4:34

see the datetimepeaker control in visual studio

etretyertyery

yes/no

tantoun14-Jun-07 10:45

tantoun

14-Jun-07 10:45

can anybody tell me how can i insert into a column in microsoft access that have a yes/no datatype
plz help me regards

etretyertyery

Re: yes/no

Sathesh Sakthivel14-Jun-07 15:51

Sathesh Sakthivel

14-Jun-07 15:51

It just remember my college days.

Now and all i am not using MS-Access we are using Oracle and SQL SERVER 2000/2005.

For more Details about MS-Access Get it[^]

Regards,

Satips. Rose | [Rose]

Re: yes/no

Christian Graus14-Jun-07 21:20

Christian Graus

14-Jun-07 21:20

I presume that yes/no would map to a boolean data type.

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog
"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

Re: yes/no

tantoun14-Jun-07 23:08

tantoun

14-Jun-07 23:08

their is a sample query that i use:
update tblClient set exist='no' !!!! but their is something wrong in this query because it can't
update the following record that have a yes/no datatype.
please if we have something to do in access or something in my code so plz help me?????
thanks

etretyertyery

Re: yes/no

Pete O'Hanlon15-Jun-07 0:33

Pete O'Hanlon

15-Jun-07 0:33

I would suspect from your example there that the problem is the quotes around 'no'. This implies that it is a string type. Replace this with false instead.

Deja View - the feeling that you've seen this post before.

Re: yes/no

tantoun15-Jun-07 4:32

tantoun

15-Jun-07 4:32

hey this is not the problem, i still have the problem
plz i need that any help
bye

etretyertyery

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