|
thank you.. i know that . but my problem in DataGrid, when change current row in dataGrid.it display this message....
sample ?!
Dataset.enforceConstraint = true
this datagrid :
-id-------name----------Price-----------------
-1--------Vir1----------1.2 $
-1--------Vir1----------1.2 $
123
-- modified at 19:24 Sunday 12th March, 2006
|
|
|
|
|
Why are you letting the user type in a Primary Key value??? This is normally done by the database engine itself.
RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome
|
|
|
|
|
Hi All
I need to write an application that checks A CSV file for a user and if they exist update a corresponding number into their "primaryTELEX" attribute.
CSV File
==================
john smith 1234
jane jones 3421
==================
I have found articles with examples in C but am having trouble converting the syntax over to VB.Net (Never worked in C)
The two examples I found are.
Find User:
The following sample code uses the FindOne method of the DirectorySearcher class to find the same user we authenticated a moment ago. We will limit the properties that are retrieved during the search.
<br />
<br />
DirectoryEntry entry = new<br />
DirectoryEntry("LDAP://dev.codeguru.com");<br />
try<br />
{<br />
DirectorySearcher search = new DirectorySearcher(entry);<br />
search.Filter = "(SAMAccountName=administrator)";<br />
search.PropertiesToLoad.Add("Name");<br />
search.PropertiesToLoad.Add("displayName");<br />
SearchResult result = search.FindOne();<br />
if( result != null )<br />
{<br />
Console.WriteLine("User found");<br />
foreach( string key in result.Properties.PropertyNames )<br />
{<br />
foreach( Object propValue in result.Properties[key] )<br />
{<br />
Console.WriteLine(key + " = " + propValue);<br />
}<br />
}<br />
}<br />
else<br />
{<br />
Console.WriteLine("User not found");<br />
}<br />
}<br />
catch( Exception ex )<br />
{<br />
throw new Exception("User not authenticated: " + ex.Message);<br />
}<br />
Console.ReadLine();<br />
Update Atribute:
<br />
try<br />
{<br />
string path = "LDAP://CN=Users,DC=dev,DC=codeguru,DC=com";<br />
DirectoryEntry entry = new DirectoryEntry(path, <br />
"dev.codeguru.com\\administrator", "password");<br />
DirectorySearcher search = new DirectorySearcher(entry);<br />
search.Filter = "(SAMAccountName=testuser)";<br />
SearchResult result = search.FindOne();<br />
DirectoryEntry user = result.GetDirectoryEntry();<br />
user.Properties["description"].Value = "New description for user";<br />
user.CommitChanges();<br />
}<br />
catch( Exception exception )<br />
{<br />
Console.WriteLine( exception.Message );<br />
}<br />
<br />
Looking for any aritcal that does this in VB, (examles would be great...
When people make you see red, be thankful your not colour blind.
|
|
|
|
|
I understand that you wish to manipulate a CSV file.
I think the best way to deal with CSV files is to refer to them like refering to databases.
Using the following link you can learn how to connect to the CSV file as a database and all you need is some knowledge in SQL queries.
http://weblogs.asp.net/fmarguerie/archive/2003/10/01/29964.aspx
HL
-- modified at 6:26 Sunday 12th March, 2006
|
|
|
|
|
The CSV file is no problem it is the query to LDAP and how to find user than update that is what I am having problems with.
I have not work with LDAP for the Directory Service in .net and am fairly new to the whole dev world..
Thanks for your input thow...
When people make you see red, be thankful your not colour blind.
|
|
|
|
|
Why is it when I have a child from, called from a mainmenu control of an MDI Container form that the combobox (on the child form) ignores the .SelectedIndex = -1, and the cbo box just loads the first value of the SQL table? Yes, the cbo is bound. When this child form is set as the active for, it obeys the .selectedindex = -1, and doesn't display a value until the cbo value is selected. Any one know?
|
|
|
|
|
I should say:
When this child form is set as the startup form, it obeys the .selectedindex = -1, and doesn't display a value until the cbo value is selected. Any one know?
|
|
|
|
|
i no this is a common bug when the desired startup object changes its name and this has happened to me.
I had a single form then added a second then deleted it and now when i try and compile it comes with the error sub main not found in ....(name of project) can any one help please???
|
|
|
|
|
Instead of setting your form as the startup object, why not change it to "Sub Main"? You can launch your form from there.
Public Class Main
Public Shared Sub Main(ByVal args() As String)
Application.EnableVisualStyles()
Application.DoEvents()
Application.Run(New MyForm)
End Sub
End Class
|
|
|
|
|
Hello! 
Yes I know I have already posted two more questions (sorry!). But I was wondering how I could show a place holder for a picture box at runtime. I should be able to adjust the size of the picture by holding the one edge of picture. Whenever I go over the picture by mouse, placeholders must show up and then I should hold the one edge of it to resize it...
uh!
Thanks
|
|
|
|
|
You need handle the PictureBox's MouseEnter and MouseLeave events as follows. You can make it display an image at runtime by setting the PictureBox.Image property.
Private Sub PictureBox1_MouseEnter(ByVal sender As Object, _
ByVal e As System.EventArgs) _
Handles PictureBox1.MouseEnter
PictureBox1.Image = myImage
End Sub
Private Sub PictureBox1_MouseLeave(ByVal sender As Object, _
ByVal e As System.EventArgs) _
Handles PictureBox1.MouseLeave
PictureBox1.Image = Nothing ' Clear the PictureBox.
End Sub
You can make the entire image fit inside the PictureBox by setting the PictureBox.SizeMode property to StretchImage.
|
|
|
|
|
I was wondring if there is a way (statement) to create clips for a picturebox. Likely place holders showing on the edge of the picture. It is likely not dealing with a image but something arround the image (a frame with the clips)....
|
|
|
|
|
I'm not sure if I understand what you want here.
Do you want several images reduced in size at one side of your PictureBox? Like say the bottom, kind of like Microsoft Explorer's Film Strip mode?
If so, then there is no "magic" function to render this for you. You're going to need to handle the PictureBox's Paint event and draw these clips there yourself via GDI+. Have a look at the System.Drawing namespace.
|
|
|
|
|
Hello!
My aim is to get command line arguments inside the code. Would you please show me the statement for the purpose. How can I get multiple arguments that are passed via executable program name. eg( abc.exe c:\def.jpg)
Thanks.
|
|
|
|
|
The easiest way to do this is to change your project's Startup Object from your form to "Sub Main". You can get the command line arguments from there as follows.
Public Class Main
Public Shared Sub Main(ByVal args() As String)
Application.EnableVisualStyles()
Application.DoEvents()
Application.Run(New MyForm)
End Sub
End Class
An alternative to this is to call System.Environment.CommandLine. The difference here is that it gives you the whole command line as one string and you have to parse it yourself.
|
|
|
|
|
Hello!
It is not possible to hide or disable a tabcontrol's tabpage in VS .NET 2005. If anyone of you a way to hide or disable the tabpage please let me know or feel free to suggest me an alternative solution for the problem.
Thanks!
|
|
|
|
|
Removing the TabPage from the TabControl's collection effectively hides it. You can reshow it by Adding it back into the collection again.
MyTabControl.TabPages.Remove(MyTabPage)
|
|
|
|
|
I think it is wrong! When you remove a tabpage from the collection. It removes everything in the tabpage, you won't able to put them back. When you add it to collection later, it shows an empty tab page...
|
|
|
|
|
You need to Remove the TabPage in your code to make this work, not through the form editor.
First create the TabPage in your form editor like you did before.
Next, in your form code you would Remove the TabPage from the TabControl's TabPage collection like this.
myTabControl.TabPages.Remove(myTabPage)
Trust me, this works. You can re-add the page to the TabControl like this.
myTabControl.TabPages.Add(myTabPage)
|
|
|
|
|
I'm using the following VB.Net code to retreive the field names of a table in an Access db:
Dim NewField As ADOX.Column
Dim tblField As ADOX.Column
For Each tblField In adocat.Tables("tblData").Columns
The fields are returned in alphabetical order! I want to have the fields returned in the order they were created. Can this be done?
|
+-- JDMils
|
+--VB6
+--VB Dot Net
|
|
|
|
|
|
There is no escape from the loop, so it surely will hang your program. You have to add a condition for when the loop should end.
---
b { font-weight: normal; }
|
|
|
|
|
thanks, but now i have another error on the path which value cannot be null.When i havent put into the loop it works.. but after put it in.. it said the path is null.. any idea wat happen to it?
For x = 1 To Val(ComboBox1.Text)
'to compare the other player,no need compare to itself
' y = pi(c).Text 'current player selection
i = pi(x).Text 'other player selection
If c <> x Then
If y = i Then
Do
'Randomly pick number from 1 to 7
Randomize(bc)
y = (Int(Rnd() * 7) + 1)
pi(c).Text = y
tokenform.token.Text = y
If y = 1 Then
imagetoken = (Path.GetDirectoryName(Application.ExecutablePath) & "\tokenimage\1egg.gif")
ElseIf y = 2 Then
imagetoken = (Path.GetDirectoryName(Application.ExecutablePath) & "\tokenimage\2egg.gif")
ElseIf y = 3 Then
imagetoken = (Path.GetDirectoryName(Application.ExecutablePath) & "\tokenimage\3egg.gif")
ElseIf y = 4 Then
imagetoken = (Path.GetDirectoryName(Application.ExecutablePath) & "\tokenimage\4egg.gif")
ElseIf y = 5 Then
imagetoken = (Path.GetDirectoryName(Application.ExecutablePath) & "\tokenimage\5egg.gif")
ElseIf y = 6 Then
imagetoken = (Path.GetDirectoryName(Application.ExecutablePath) & "\tokenimage\6egg.gif")
ElseIf y = 7 Then
imagetoken = (Path.GetDirectoryName(Application.ExecutablePath) & "\tokenimage\7egg.gif")
End If
Loop Until y <> i
End If
End If
Next
|
|
|
|
|
That is because you only set the path if you had to pick a random number.
---
b { font-weight: normal; }
|
|
|
|
|
actually i was trying to make the image keep on changing so it loop like randomly chossing picture.... i try to move that if..else statement after the loop but same error...
|
|
|
|
|
What does the code look like where you get the error, then?
---
b { font-weight: normal; }
|
|
|
|
General 
News 
Suggestion 
Question 
Bug 
Answer 
Joke 
Praise 
Rant 
Admin 
Submit an article or tip
