Re: Simple .. Dropdownlist - Visual Basic Discussion Boards

dotnet_cpp10-Jun-04 6:02

10-Jun-04 6:02

I am not able to select the 1st item from the dropdownlist.

If I select any other item .. it recognice and i am able to see it in Dropdownlist1.selecteditem.item

any help please

Re: Simple .. Dropdownlist

Dave Kreskowiak10-Jun-04 6:29

Dave Kreskowiak

10-Jun-04 6:29

There is no known problem with the DropDownList. You'll have to post the code your using to populate the list and handle the SelectedItem event so we can see what your doing wrong...

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Re: Simple .. Dropdownlist

dotnet_cpp10-Jun-04 7:01

dotnet_cpp

10-Jun-04 7:01

I am reading XMlnode file and row tage have THISNAME AND THISID attributes

Dim NodeList As XmlNodeList = node.SelectNodes("//row")
Dim i = 0
Dim count = NodeList.Count

While (i < count)
Dim element As XmlElement
element = NodeList.Item(i)

Dim thisNameNode As XmlNode = element.Attributes.GetNamedItem("THISNAME")
Dim thisIdNode As XmlNode = element.Attributes.GetNamedItem("THISID")
If Not (thisNameNode Is Nothing) And Not (thisIdNode Is Nothing) Then
Dim thisNameValue As String = thisNameNode.Value
Dim thisIdValue As String = thisIdNode.Value

Dim item = New ListItem(thisNameValue, thisIdValue)
DropDownList1.Items.Add(item)
End If
i += 1
End While

Thanks,

Re: Simple .. Dropdownlist

Dave Kreskowiak10-Jun-04 7:27

Dave Kreskowiak

10-Jun-04 7:27

So far, so good... What about the code that handles the SelectedItem event?

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Re: Simple .. Dropdownlist

dotnet_cpp10-Jun-04 8:13

dotnet_cpp

10-Jun-04 8:13

private Sub DropDownList1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles DropDownList1.SelectedIndexChanged

If DropDownList1.SelectedItem.Selected = True Then
Label3.Text = DropDownList1.SelectedItem.Text
End If
End Sub

here i don't see anything when i select 1st item

Re: Simple .. Dropdownlist

Dave Kreskowiak10-Jun-04 8:26

Dave Kreskowiak

10-Jun-04 8:26

Don't check for the status of the Selected item. I take it your supporting only one selected item at a time. So don't check for the Selected property, you don't need it. Just use this:

Private Sub DropDownList1_SelectedIndexChanged( _
        ByVal sender As System.Object, ByVal e As System.EventArgs) _
        Handles DropDownList1.SelectedIndexChanged
 
    ' This will check to see if an Item is really selected...
    If Not DropDownList1.SelectedItem Is Nothing Then
        Label3.Text = DropDownList1.SelectedItem.Text
    End If
End Sub

If the event that more than one item is selected, this code will return the selected item with the lowest index in the DropDownList Items collection.

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Re: Simple .. Dropdownlist

dotnet_cpp10-Jun-04 8:49

dotnet_cpp

10-Jun-04 8:49

It waorks fine when i have dropdownlist with more then one item but when i select the first item from dropdownlist in this case only one item in dropdownlist .. still the same problem.

I am populating dropdownlist dynamically so don't know how many items will be in that dropdowmlist. i know it's going to be atleast one.

Re: Simple .. Dropdownlist

Dave Kreskowiak10-Jun-04 9:00

Dave Kreskowiak

10-Jun-04 9:00

Then take out the if statement. This won't catch any errors and doesn't put any restrictions on what will be displayed.

Private Sub DropDownList1_SelectedIndexChanged( _
        ByVal sender As System.Object, ByVal e As System.EventArgs) _
        Handles DropDownList1.SelectedIndexChanged

        Label3.Text = DropDownList1.SelectedItem.Text
End Sub
 

RageInTheMachine9532<font size="-1">
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome</font>

Re: Simple .. Dropdownlist

dotnet_cpp10-Jun-04 11:06

dotnet_cpp

10-Jun-04 11:06

Still same thing

Re: Simple .. Dropdownlist

Dave Kreskowiak10-Jun-04 11:38

Dave Kreskowiak

10-Jun-04 11:38

I have no idea what your doing wrong, because the same code works fine for me...

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

VBA/Excel - Charting question

Jon G10-Jun-04 5:10

Jon G

10-Jun-04 5:10

(REVISED)

I am trying to do the following:

-Check each Point of a chart series to ensure it is within specific limits
-If Point is not in limit, change the Marker type of that Point

What my question is, how do you check specific Points in a series using VBA?

---------------------------------

After posting this question, I found out how to check the point values. I still cannot figure out how to change these individual Marker types to what I want.

Here is the code to check the values:

'***Checks series points, and colors them if need be<br />
Function RefreshPoints(ChartName)<br />
    <br />
    Dim nPts As Integer<br />
    Dim aVals As Variant<br />
    <br />
    Worksheets(ChartName).ChartObjects(1).Activate<br />
<br />
    With ActiveChart.SeriesCollection(1)<br />
        nPts = .Points.Count<br />
        aVals = .Values<br />
        For iPts = 1 To nPts<br />
            MsgBox aVals(iPts)<br />
        Next iPts<br />
    End With<br />
<br />
End Function

Can anyone tell me how to build on that above function to change the marker type of a single Point?

Re: VBA/Excel - Charting question

Jon G10-Jun-04 5:25

Jon G

10-Jun-04 5:25

For those who care, I have solved my problem.. here is the final code:

'***Checks series points, and colors them if need be<br />
Function RefreshPoints(ChartName)<br />
    <br />
    Dim nPts As Integer<br />
    Dim aVals As Variant<br />
    <br />
    Worksheets(ChartName).ChartObjects(1).Activate<br />
<br />
    With ActiveChart.SeriesCollection(1)<br />
        nPts = .Points.Count<br />
        aVals = .Values<br />
        For iPts = 1 To nPts<br />
            .Points(iPts).MarkerBackgroundColorIndex = 35<br />
            .Points(iPts).MarkerForegroundColorIndex = 1<br />
            .Points(iPts).MarkerStyle = xlTriangle<br />
            .Points(iPts).MarkerSize = 13<br />
            .Points(iPts).Shadow = False<br />
        Next iPts<br />
    End With<br />
<br />
End Function

Now its just missing a few If statements to finish up, but thats what got it working. Just thought I'd post the code if anyone was interested.

sqldataadapter?

ymohd_22210-Jun-04 3:20

ymohd_222

10-Jun-04 3:20

When I use this code:
Dim pubsadapter As sqldataadapter = New sqldataadapter("select*from authors", pubssqlconn)

And Build It. the results gives me that sqldataadapter not defined.
I Imports the following before:
Imports System.Data
Imports System.Data.SqlClient
Thanks

Go forward and never Stop....

Re: sqldataadapter?

Dave Kreskowiak10-Jun-04 4:11

Dave Kreskowiak

10-Jun-04 4:11

Then it should work. The lowercase spelling of the SqlDataAdapter name tells me that the Imports statements are incorrect somehow. They are spelled correctly, but possible not at the very top of the code file? They should normally come before any Namespace or Class statements.

You might want to try posting the code so we can see it?

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Re: sqldataadapter?

VenkatFor.NET10-Jun-04 11:01

VenkatFor.NET

10-Jun-04 11:01

Does it give any error at 'Imports' statement. VS.NET includes reference to System.Data.dll in most of the project templates. If we remove this reference to System.Data.dll, Imports will have no meaning. Imports is just to import the namespaces just for coding purpose but we still have to have a reference in the project.

BK

TreeView --> Move Nodes

Brad Fackrell10-Jun-04 3:04

Brad Fackrell

10-Jun-04 3:04

Hi.

Can anybody tell me if there is a way to move nodes within a TreeView? I have found how to use drag-and-drop between two different TreeViews but haven’t been able to figure out how to tweak the code to make it work within ONE TreeView.

I would like to be able to simply move child nodes (and parent, if possible) up and down in the Tree.

Thanks
Brad

Input Data From Data Grid

Jakarta_Project10-Jun-04 1:17

Jakarta_Project

10-Jun-04 1:17

Hi......

I'm a newbie here.

I have a question about how to input data from data grid control in Visual Basic.
I hope somebody can help me about this problem.
Thanks Smile | :)

Re: Input Data From Data Grid

Dave Kreskowiak10-Jun-04 3:50

Dave Kreskowiak

10-Jun-04 3:50

Jakarta_Project wrote:
I have a question about how to input data from data grid control in Visual Basic.

And that question would be ..........???

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Re: Input Data From Data Grid

tramdtt10-Jun-04 20:55

tramdtt

10-Jun-04 20:55

You should Vsflexgrid to input direct data

tramdtt

system analysis and design

len_ems9-Jun-04 22:36

len_ems

9-Jun-04 22:36

hello guys...

It's our first semester here in our school and part of our 4th year standing here is to create our own information system. Can you suggest some systems except enrolment systems, election systems, point-of-sale systems, accounting systems, etc...

Thanks...

Re: system analysis and design

RichardGrimmer9-Jun-04 23:14

RichardGrimmer

9-Jun-04 23:14

Bug tracking?
Timesheet analysis?
Expenses?

(And there are ASP.NET reference applications for all of these (www.asp.net[^])if you need some "inspiration")

"Now I guess I'll sit back and watch people misinterpret what I just said......"
Christian Graus At The Soapbox

Re: system analysis and design

Anonymous14-Jun-04 18:26

Anonymous

14-Jun-04 18:26

Dear Sir,

Thanks for your suggestion... Good luck and Mabuhay...

len_ems

byte length restriction in text box

Rohitse9-Jun-04 22:14

Rohitse

9-Jun-04 22:14

Hey All,

I have a simple quetion to ask.
The maxlength property of an edit box restricts user to enter more than the specified characters. But in the Japanese system, if user enters double-byte characters, then the actual byte would exceed that limit.
Do we have similar restriction on byte length as well?
I used LenB() method but it considers even the Ascii characters in the English language to be 2 bytes long.
e.g LenB("123") gives me 6.

So is there any generic function which would return me the exact bytes in a string (considering the 1 byte and 2 byte characters differently) and that can be used with English system and Japanese systems where user can enter Japanese as well as English character in the text box.

Thanks
Rohit

Re: byte length restriction in text box

RichardGrimmer9-Jun-04 23:17

RichardGrimmer

9-Jun-04 23:17

VB (6 at least - not sure about .NET) uses BSTRs to handle strings, which are always two bytes / char (AKAIK), with a couple at the front end for length...

"Now I guess I'll sit back and watch people misinterpret what I just said......"
Christian Graus At The Soapbox

Re: byte length restriction in text box

Dave Kreskowiak10-Jun-04 3:49

Dave Kreskowiak

10-Jun-04 3:49

All Strings in the .NET Framework are Unicode strings. They all have double-byte characters, so yes, "123" will return 6 bytes.

You can't have two different encodings in the same string. It's either going to be all single-byte, or all double-byte, not both...

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

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