Solved

Delete selected row on right click in vb.net

Posted on 2014-02-24
4
619 Views
Last Modified: 2014-02-24
Hi all.

I have a datagridview control that displays records based on the code below in Visual Studio 2010. I want to be able to right click a row and when the end user selects DELETE then it deletes it from the table and the datagridview control is refreshed. As you can see, I select the QuoteNumber which is the primary key of the table, but I don't show it in the datagridview control (I don't know if this will cause an issue). I started building the ContextMenuStrip1_Click event and I get an error at the cmd.ExecuteNonQuery() line: "No mapping exists from the object type System.Windows.Form.DataGridViewTextBoxColumn to a known managed provider native type"

Dim con As New SqlConnection
        Dim cmd As New SqlCommand

        con.ConnectionString = "Data Source=myserver;Initial Catalog=mydb;Integrated Security=True"

        con.Open()

        cmd.Connection = con

        cmd.CommandText = "SELECT  IQ.QuoteNumber,IQ.MasterItemNumber, IQ.Description, IQ.SLXID, SLX.ACCOUNT,IQ.QuoteDate, IQ.UnitCost, IQ.QuotedCost, IQ.MASItemNumber, IQ.Notes FROM mydb.dbo.IQuote IQ INNER JOIN [mydb2].db2.sysdba.ACCOUNT SLX ON IQ.SLXID = SLX.ACCOUNTID WHERE MasterItemNumber = @MasterItemNo"

        cmd.Parameters.AddWithValue("@MasterItemNo", txtMasterItemNo.Text)

        Dim sda As New SqlDataAdapter(cmd)
        Dim dt As New DataTable()

        DataGridView1.DataSource = Nothing

        sda.Fill(dt)

DataGridView1.ColumnCount = 3   'Set Columns Count

        'Add Columns

        DataGridView1.Columns(0).Name = "MasterItemNumber"
        DataGridView1.Columns(0).HeaderText = "Master Item Number"
        DataGridView1.Columns(0).DataPropertyName = "MasterItemNumber"
        DataGridView1.Columns(0).Width = 180

        DataGridView1.Columns(1).Name = "MyItemNumber"
        DataGridView1.Columns(1).HeaderText = "My Item Number"
        DataGridView1.Columns(1).DataPropertyName = "MyItemNumber"
        DataGridView1.Columns(1).Width = 150

        DataGridView1.Columns(2).Name = "Description"
        DataGridView1.Columns(2).HeaderText = "Description"
        DataGridView1.Columns(2).DataPropertyName = "Description"
        DataGridView1.Columns(2).Width = 240

Open in new window


Private Sub ContextMenuStrip1_Click(sender As System.Object, e As System.EventArgs) Handles ContextMenuStrip1.Click
Dim con As New SqlConnection
        Dim cmd As New SqlCommand

        con.ConnectionString = "Data Source=myserver;Initial Catalog=mydb;Integrated Security=True"

        con.Open()

        cmd.Connection = con

cmd.CommandText = "DELETE From IQuote where QuoteNumber = @QuoteNumber"
cmd.Parameters.AddWithValue("@QuoteNumber", DataGridView1.Columns("QuoteNumber"))
cmd.ExecuteNonQuery()

con.Close()

    End Sub

Open in new window

0
Comment
Question by:printmedia
  • 2
  • 2
4 Comments
 
LVL 83

Accepted Solution

by:
CodeCruiser earned 500 total points
ID: 39882798
Change

cmd.Parameters.AddWithValue("@QuoteNumber", DataGridView1.Columns("QuoteNumber"))

to

cmd.Parameters.AddWithValue("@QuoteNumber", DataGridView1.SelectedRows(0).Cells("QuoteNumber").Value)
0
 

Author Comment

by:printmedia
ID: 39882815
Thank you for your reply.

Now I get the following error: "Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index."

At the line of code you suggested.

Could it be because when the end user right clicks it only highlights the cell that is right-clicked and not the entire row? Or could it be I'm not displaying the QuoteNumber as a column in the datagridview control?
0
 

Author Comment

by:printmedia
ID: 39883012
The SelectionMode was the problem. I had it set to Cell Select, I switched back to FullRowSelect and your suggested line of code works and deletes the row:

cmd.Parameters.AddWithValue("@QuoteNumber", DataGridView1.SelectedRows(0).Cells("QuoteNumber").Value)

Open in new window


Thanks again.
0
 
LVL 83

Expert Comment

by:CodeCruiser
ID: 39883246
Glad to help :-)
0

Featured Post

Why You Should Analyze Threat Actor TTPs

After years of analyzing threat actor behavior, it’s become clear that at any given time there are specific tactics, techniques, and procedures (TTPs) that are particularly prevalent. By analyzing and understanding these TTPs, you can dramatically enhance your security program.

Join & Write a Comment

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…
It was really hard time for me to get the understanding of Delegates in C#. I went through many websites and articles but I found them very clumsy. After going through those sites, I noted down the points in a easy way so here I am sharing that unde…
Internet Business Fax to Email Made Easy - With eFax Corporate (http://www.enterprise.efax.com), you'll receive a dedicated online fax number, which is used the same way as a typical analog fax number. You'll receive secure faxes in your email, fr…
Polish reports in Access so they look terrific. Take yourself to another level. Equations, Back Color, Alternate Back Color. Write easy VBA Code. Tighten space to use less pages. Launch report from a menu, considering criteria only when it is filled…

707 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

Need Help in Real-Time?

Connect with top rated Experts

12 Experts available now in Live!

Get 1:1 Help Now