Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people, just like you, are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
Solved

Delete selected row on right click in vb.net

Posted on 2014-02-24
4
632 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

Free Tool: SSL Checker

Scans your site and returns information about your SSL implementation and certificate. Helpful for debugging and validating your SSL configuration.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

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

Suggested Solutions

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…
Introduction As chip makers focus on adding processor cores over increasing clock speed, developers need to utilize the features of modern CPUs.  One of the ways we can do this is by implementing parallel algorithms in our software.   One recent…
Although Jacob Bernoulli (1654-1705) has been credited as the creator of "Binomial Distribution Table", Gottfried Leibniz (1646-1716) did his dissertation on the subject in 1666; Leibniz you may recall is the co-inventor of "Calculus" and beat Isaac…
With Secure Portal Encryption, the recipient is sent a link to their email address directing them to the email laundry delivery page. From there, the recipient will be required to enter a user name and password to enter the page. Once the recipient …

840 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