Re: Global Variable - Windows Forms Discussion Boards

how do i search a value using combo box in vb.net

sathyan_829420-Jun-07 22:13

20-Jun-07 22:13

i am using dotnet 2003.i am doing my project in vb.net windows application.i have two form in my project.first form is datagrid .In second form label,textboxes and combobox are avilable to save the entering values in datagrid of first form through this 2nd form.my problem is,i want to search a value using combobox.
for example,
in first form,
there are 4 columns named as name,age,rollno,address in datagrid.
values are ramu for namecolumn,24 for age column,42 for rollno column,cbe for address column.now values in datagrid like below
id name age rollno address
1 ramu 24 42 cbe
2 somu 23 32 che
here id is primary key.
in 2nd form,there are 4 label,4 textbox and 1 combobox.textbox arenamed as nametextbox,agetextbox,rollnotextbox,addresstextbox and 1 combobox named as searchcombobox.
now values of name(ramu,somu) are stored in combobox.
my problem is,
in second form,
if i click the value ramu in combobox means,want to display the values of ramu in textboxes.(ie..want to display automatically ramu in nametextbox,24 in age textbox,42 in rollnotextbox,cbe in address textbox)
during runtime in vb.net windows application.so how i automatically display the values of row in each textbox by clicking the values in combobox.plz help me.

User-ordered list (C#)

ruanr20-Jun-07 22:06

ruanr

20-Jun-07 22:06

Hi,

I want the user to order a list of items. What I had in mind was a control similar to a ListBox, where the user can click-and-drag items into the order they need. This is a fairly common operation, but I was unable to find a predefined control doing this. Any help?

thanks..

Re: User-ordered list (C#)

originSH21-Jun-07 0:09

originSH

21-Jun-07 0:09

Theres no control that will do this by default that I can think of.

This is an article on how to modify a ListView to allow row reordering.
http://www.codeproject.com/cs/miscctrl/dragdroplistviewreorder1.asp?df=100&forumid=16243&exp=0&select=662014[^]

Global Variable

ozzyrocsdbn20-Jun-07 21:34

ozzyrocsdbn

20-Jun-07 21:34

I have a login box with Validation against a Password database

I would like to use the UserNo. in another form

I have menthod

Public sub frmLogin(Byval Userno as String)
dim login as integer
login = Cint(Log)
{ Now how do use that login variable in another form)

Re: Global Variable

Giorgi Dalakishvili20-Jun-07 22:08

Giorgi Dalakishvili

20-Jun-07 22:08

Have a look at this article:
passingvaluesbetweenforms[^]

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Re: Global Variable

ozzyrocsdbn20-Jun-07 22:39

ozzyrocsdbn

20-Jun-07 22:39

Thanks So Much You Rock

Re: Global Variable

Giorgi Dalakishvili20-Jun-07 22:41

Giorgi Dalakishvili

20-Jun-07 22:41

You are welcome Smile | :)

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Re: Global Variable

Brady Kelly20-Jun-07 22:12

Brady Kelly

20-Jun-07 22:12

Create a property on this form that exposes the user no. The access that property from the other form before closing this one. You only hide the login form when done, and close or dispose it after reading the property.

Re: Global Variable

ozzyrocsdbn20-Jun-07 22:38

ozzyrocsdbn

20-Jun-07 22:38

That not so helpful But Thanks

Any Code to support your Written disscussion

Re: Global Variable

Brady Kelly20-Jun-07 22:46

Brady Kelly

20-Jun-07 22:46

It's only not helpful if you choose to not explore what I said.

Re: Global Variable

vims25-Jun-07 21:53

vims

25-Jun-07 21:53

If you want to use valid login name on another form after user authentication the you can create a public property on your another form and fill it with the value by accessing it before opening that form.

Ex:--> if you are on "login.cs" and want to open "Admin.cs" then code for admin will have a public property say "UserNo"

Private int userNo;

Public property int UserNo
{
get { return userNo;}
set { userNo = value;}
}

Now on login.cs after user validation

Admin admin = new Admin() (( This depends opn your architecture))
admin.UserNo = login;
admin.ShowDialog();

This way the user no will be available as per code optimization also.

vims

Import / Export of data from an Excel Sheet

Siddhartha S.20-Jun-07 20:45

Siddhartha S.

20-Jun-07 20:45

I have a windows form in C# with some text boxes and a botton control.
I wanted a code piece to guide me to feed an excel sheet from a text box over a button click. To elaborate it, the contents of a text box should go to a particular cell of the Excel work sheet on button click.

A reference to an article that may solve the problem will also do. Smile | :)

Thanks,

Sid

Button control

dodoxor20-Jun-07 20:14

dodoxor

20-Jun-07 20:14

Hello to everyone. I've a window form application in c++ and i've a button in it.
How can i add the properties that when the mouse is over the control a description of the control is shown?
Thanks for answers regards.

Re: Button control

Manas Bhardwaj22-Jun-07 5:08

Manas Bhardwaj

22-Jun-07 5:08

Catch the MouseOver event
Rose | [Rose]

Re: Button control

dodoxor22-Jun-07 21:19

dodoxor

22-Jun-07 21:19

Hi, thanks for answer.
I'know there's the event onmousehover but i think what i want is different.
when you are on a button,(like start button of windows xp) a yellow rectangle with a help description is shown. How can i do this?
Thanks , regards

Re: Button control

Manas Bhardwaj23-Jun-07 2:07

Manas Bhardwaj

23-Jun-07 2:07

dodoxor wrote:
when you are on a button,(like start button of windows xp) a yellow rectangle with a help description is shown. How can i do this?

This piece of code should do for you :

private void startButton_MouseHover(object sender, System.EventArgs e)<br />
		{<br />
			startButton.BackColor = Color.Yellow;<br />
			ToolTip toolTip = new ToolTip();<br />
			toolTip.ShowAlways = true;<br />
			toolTip.SetToolTip(startButton, "Whatever Message...");<br />
			<br />
		}

Re: Button control

dodoxor23-Jun-07 21:40

dodoxor

23-Jun-07 21:40

Thanks a lot is working. I 've also tried to put
ToolTip toolTip = new ToolTip();
toolTip.ShowAlways = true;
toolTip.SetToolTip(startButton, "Whatever Message...");
in the Form_load event and is work too.
Thanks, bye.

Re: Button control

vims25-Jun-07 21:58

vims

25-Jun-07 21:58

Set tooltip property at design time , if the button is created dynamically then user code to set tooltip property

Checkbox column problem

jimbaloo20-Jun-07 3:46

jimbaloo

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

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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.

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