Solved

Reading from one column in a Dataset

Posted on 2006-06-30
2
193 Views
Last Modified: 2010-04-23
Hi all,

I have a Dataset in my app populated with 10 columns of data. I also have a ComboBox that contains all the names of the columns. What I am trying to achieve is, when a user selects a column name from the ComboBox my app should look at the data in my Dataset from the selected column only and try to find a predefined value. If not found then it should pop up a message box. If all data in the column does match the predefined value then a different message box pops up.

Can someone give me a code example of how to do this as I am having a bit of trouble trying to figure it out.

Many Thanks.
0
Comment
Question by:kiranboi
2 Comments
 
LVL 17

Accepted Solution

by:
ZeonFlash earned 500 total points
ID: 17018259
From your description, this is what I came up with:

    Dim objPredefinedValue As Object = "Predefined Value"

    Private Sub ComboBox1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ComboBox1.SelectedIndexChanged
        Dim intMatchesFound As Integer = 0

        For Each row As DataRow In dsDataset.Tables(0).Rows
            If row.Item(ComboBox1.SelectedValue) = objPredefinedValue Then intMatchesFound += 1
        Next

        If intMatchesFound = 0 Then : MsgBox("No match found")
        ElseIf intMatchesFound = dsDataset.Tables(0).Rows.Count Then : MsgBox("All rows match")
        Else : MsgBox(intMatchesFound & " matches found")
        End If
0
 

Author Comment

by:kiranboi
ID: 17018339
Works great, thanks
0

Featured Post

Live: Real-Time Solutions, Start Here

Receive instant 1:1 support from technology experts, using our real-time conversation and whiteboard interface. Your first 5 minutes are always free.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article explains how to create and use a custom WaterMark textbox class.  The custom WaterMark textbox class allows you to set the WaterMark Background Color and WaterMark text at design time.   IMAGE OF WATERMARKS STEPS Create VB …
Article by: Kraeven
Introduction Remote Share is a simple remote sharing tool, enabling you to see, add and remove remote or local shares. The application is written in VB.NET targeting the .NET framework 2.0. The source code and the compiled programs have been in…
This Micro Tutorial demonstrates using Microsoft Excel pivot tables, how to reverse engineer competitors' marketing strategies through backlinks.
Finds all prime numbers in a range requested and places them in a public primes() array. I've demostrated a template size of 30 (2 * 3 * 5) but larger templates can be built such 210  (2 * 3 * 5 * 7) or 2310  (2 * 3 * 5 * 7 * 11). The larger templa…

776 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question