Re: Using Listbox help - Visual Basic Discussion Boards

Sven Cipido5-Jul-07 21:15

5-Jul-07 21:15

Hi,

Here's a link with code in VB.Net, but you can see how it's done and reprogram it in VB6.
http://blogs.vbcity.com/mcintyre/archive/2006/12/11/7343.aspx[^]

Here's an article which grabs all the words out of a word or text file and places them in an array. You can use a part of the code for your counting : http://vb-helper.com/howto_list_doc_words.html[^]

Hopes this helps you out.

Sven

calling form using formname

anujose5-Jul-07 18:56

anujose

5-Jul-07 18:56

i have a string variable that contain form name.using that formname i want to call the form in the application.Is it possible?. can any one help me?.

Re: calling form using formname

Sonia Gupta5-Jul-07 20:09

Sonia Gupta

5-Jul-07 20:09

Dim d As New Form<br />
       d.Name = "formname"<br />
       d.Show()

Re: calling form using formname

Dave Kreskowiak6-Jul-07 5:11

Dave Kreskowiak

6-Jul-07 5:11

If you're thinking of doing this, it's usually a sign that your design needs to be rethought out. You should never be creating data in your application out of the names of classes in your code.

A guide to posting questions on CodeProject[^]

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

Crystal Reports

Socheat.Net5-Jul-07 17:18

Socheat.Net

5-Jul-07 17:18

I have installed Crystal reports Standard Edition with version 11.0, Can i add reference to Microsoft Visual Studio.NET 2005? If can, how can i add?

Socheat

Using Listbox help

benny777ex5-Jul-07 17:07

benny777ex

5-Jul-07 17:07

hi, im new here,

say here's a list box with different items:
apple
54321
cookie
sos101
1111

from above there are 5 lines of items in a listbox,
how to do something like reading the number of the line?
like text1.text = "read line 3"
which the text1 textbox will appear cookie
how to do that?

Please Help,
Thanks.

Benny

Re: Using Listbox help

TwoFaced5-Jul-07 17:21

TwoFaced

5-Jul-07 17:21

You'd write something like this

text1.text = ListBox1.Items.Item(2).ToString()

The array holding the items is zero based, which means the 3rd item is really the 2nd element in the array.

Re: Using Listbox help

benny777ex5-Jul-07 17:38

benny777ex

5-Jul-07 17:38

Thanks for reply Smile | :)

just want make something clear,
does the order of the item count from the top??
if yes, so the top one is 0, second one is 1, third is 2, fifth is 4?

Re: Using Listbox help

The ANZAC5-Jul-07 17:52

The ANZAC

5-Jul-07 17:52

that's correct. It's zero based indexing starting at the top. The last item will always be listbox1.items.count - 1. Remember the minus 1 when working with listboxes. You can also check if a listbox has any item selected through:

if listbox1.selectedindex = -1 then<br />
'none is selected<br />
end if

Posted by The ANZAC : "WWBD, What Would Buffy Do?" : "I don't know man, she's stronger than me"

Re: Using Listbox help

benny777ex5-Jul-07 18:58

benny777ex

5-Jul-07 18:58

Thanks for your respond Smile | :)

i have another question,
I want to read the selected line with a text box, so I wrote:
Display.Text = JobList.Items.Item(LineNumber.Text).ToString
there are 2 textboxs: Display.Text, LineNumber.Text
and 1 listbox: JobList
but an error returned...

Re: Using Listbox help

Sathesh Sakthivel5-Jul-07 18:59

Sathesh Sakthivel

5-Jul-07 18:59

benny777ex wrote:
but an error returned

What error?

Regards,

Satips. Rose | [Rose]

Re: Using Listbox help

benny777ex5-Jul-07 19:20

benny777ex

5-Jul-07 19:20

uhh sorry I was wrong, resolved. Thanks

Benny

Im using:
Windows XP Professional SP2
Microsoft Visual Basic 2005 (.NET)

Re: Using Listbox help

Sathesh Sakthivel5-Jul-07 19:21

Sathesh Sakthivel

5-Jul-07 19:21

Ok . No Problem.

Regards,

Satips. Rose | [Rose]

Re: Using Listbox help

benny777ex5-Jul-07 22:45

benny777ex

5-Jul-07 22:45

benny777ex wrote:
I want to read the selected line with a text box, so I wrote:
Display.Text = JobList.Items.Item(LineNumber.Text).ToString
there are 2 textboxs: Display.Text, LineNumber.Text
and 1 listbox: JobList

hi I have another question,
Like I said, I want to read the selected line with textbox.
how to highlight the line in the listbox?
or is it possible to do some text change, such as make it bold,
or add some extra text like:
">>" + the line in the list box + "<<"
in the line in the listbox?

Please Help,
Thanks

Benny

Im using:
Windows XP Professional SP2
Microsoft Visual Basic 2005 (.NET)

Re: Using Listbox help

Sonia Gupta5-Jul-07 23:14

Sonia Gupta

5-Jul-07 23:14

use the following framework base class and it's functions
Imports Microsoft.VisualBasic.Compatibility.VB6
getitemdata
setitemdata

Sonia Gupta
Soniagupta1@yahoo.co.in

Re: Using Listbox help

benny777ex6-Jul-07 0:01

benny777ex

6-Jul-07 0:01

Thanks for reply Smile | :)

I had imported Microsoft.VisualBasic.Compatibility.VB6.
but... how to use them?

Benny

Im using:
Windows XP Professional SP2
Microsoft Visual Basic 2005 (.NET)

Re: Using Listbox help

The ANZAC6-Jul-07 1:24

The ANZAC

6-Jul-07 1:24

NO DON'T USE THAT PLEASE! That is a bad habit, to form a dependency on old vb6 methods, you should learn the new way because those methods will be phased out, most likely in the next edition. Do this:

me.listbox1.selectedindex = 'whatever number between 0 and listbox1.count - 1 or a variable

Posted by The ANZAC : "WWBD, What Would Buffy Do?" : "I don't know man, she's stronger than me"

Re: Using Listbox help

benny777ex6-Jul-07 1:36

benny777ex

6-Jul-07 1:36

Thanks again Smile | :)

I used your way, it works beautifully.

Benny

Im using:
Windows XP Professional SP2
Microsoft Visual Basic 2005 (.NET)

Re: Using Listbox help

The ANZAC6-Jul-07 2:37

The ANZAC

6-Jul-07 2:37

Your welcome, anytime.

Posted by The ANZAC : "WWBD, What Would Buffy Do?" : "I don't know man, she's stronger than me"

Dynamic DataGridView problems

nz_fox5-Jul-07 14:57

nz_fox

5-Jul-07 14:57

I have a datagridview control on the form and I want to let the user to pick a table and popular the table to the datagridview. The codes I have that work except, everytime you populate the datagridview with a different table, it maintain the old table columns.
Here is my codes

 Dim mycommand As New SqlClient.SqlCommand<br />
        mycommand.Connection = myConn<br />
        Dim TableName As String = ComboBox2.SelectedItem<br />
        mycommand.CommandText = "Select * from " & TableName<br />
        myConn.Open()<br />
        Try<br />
            da = New SqlClient.SqlDataAdapter(mycommand)<br />
            ds.Clear()<br />
            da.Fill(ds)<br />
            Dim dt As New DataTable<br />
            dt = ds.Tables(0)<br />
            DataGridView1.DataSource = dt<br />
<br />
        Catch ex As Exception<br />
            Debug.Print(ex.ToString())<br />
            MsgBox(ex.ToString)<br />
        Finally<br />
            myConn.Close()<br />
        End Try<br />

I thought that must be something very simple that I'm missing.

Re: Dynamic DataGridView problems

Polymorpher5-Jul-07 15:06

Polymorpher

5-Jul-07 15:06

Clear the grid views columns before assigning the new datasource.

--
"Keyboard not found. Press < F1 > to RESUME. "
Source unknown (appears in many common BIOSes as a real error message)

Automating code to update fill periodically

Cory Kimble5-Jul-07 9:22

Cory Kimble

5-Jul-07 9:22

Is there a way in .net to automatically run a task? I thought I once saw something about a pause or wait feature you can wait for so many milliseconds. And, is this plausible? Another question I have is, is there a way to see when a file is updated? (I want to open a file and read it but I only want to read it if it has been updated.

Re: Automating code to update fill periodically

Christian Graus5-Jul-07 9:33

Christian Graus

5-Jul-07 9:33

1 - you're talking about a timer
2 - there is a file watcher class, yes.

Christian Graus - Microsoft MVP - C++

"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 )

Making a particular cell of datagrids uneditable [modified]

hsprasain5-Jul-07 8:23

hsprasain

5-Jul-07 8:23

Hey all:

Can anybody give me ideas how can I lock the particular cell of the datagrids. I used Readonly properties of Datagrids, that makes whole datagrids uneditable.

I want only some particular cells of grids to be uneditable.

Thanks many for your advance help.

-- modified at 11:51 Friday 6th July, 2007

Re: Making some columns of datagrids uneditable

aphei5-Jul-07 17:07

aphei

5-Jul-07 17:07

you can try this code

first you must set your grid readonly property to false

Dim intI, intJ As Integer
With grid
For intI = 0 To .Rows.Count - 1
.Rows(intI).ReadOnly = True
if intI = x then
.Rows(intI).ReadOnly = False
For intJ = 0 To .Columns.Count - 1
if intJ = y then
.Columns(intJ).ReadOnly = False
end if
Next
End If
Next
End With

hope this can help to solve your problem

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.