how to delete selected row of datagrideview using checkboxes

Question

0.00/5 (No votes)

See more:

my problem when I select 3 selected rows from gridview using checkboxes remove 2 rows and the last row don't remove
what's the solution?
I write this class

C#

 public static bool DeletePayments(int id)
{                     
       bool b;

       string strconn = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=..\..\Salaries.accdb";
       OleDbConnection conn = new OleDbConnection(strconn);

       if (conn.State == ConnectionState.Closed)
       {
              conn.Open();
       }

       OleDbCommand cmd = new OleDbCommand("DELETE FROM Payments WHERE Payment_ID =@id;", conn);

      cmd.Parameters.Add(new OleDbParameter("@id", id));

       int i = cmd.ExecuteNonQuery();

       if (i <= 0)
              b = false;
       else
              b = true;
       conn.Close();
       return b;
}

and at button_click event I write

C#

private void button3_Click(object sender, EventArgs e)
{
       for (int i = 0; i < GridViewPays.Rows.Count; i++)
       {
              if (GridViewPays.Rows[i].Cells[0].Value != null)
              {
                     if ((bool)GridViewPays.Rows[i].Cells[0].Value == true)
                     {
                            GridViewPays.Rows.RemoveAt(i);

                            if (PaymentsMgr.DeletePayments(int.Parse(GridViewPays.CurrentRow.Cells["Payment_ID"].Value.ToString())))
                            {
                                   GridViewPays.EndEdit();
                            }
                     }
              }
       }
}

Posted 31-Jul-14 4:18am

firaso

Updated 31-Jul-14 4:45am

CHill60

v2

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

CHill60 · Answer 1 · 2014-07-31T04:53:00

The problem is because you have started at the "beginning" of the gridview's rows with

C#

for (int i = 0; i < GridViewPays.Rows.Count; i++)

Say your DGV has 4 rows :

0  Row 1
1  Row 2
2  Row 3
3  Row 4

If you delete the first row (index = 0) the DGV will have to "shuffle" the remaining rows upwards - like this:

0  Row 2
1  Row 3
2  Row 4

So your loop moves onto its next value (index = 1) and deletes what was Row 3 and the rest get shuffled up.

0  Row 2
1  Row 4

When deleting from lists / grids / etc, if you are going to use the index of an item in a loop, always start at the bottom of the list and work upwards (or backwards). That way the rows do not get shuffled upwards, they stay where they were originally. E.g.

C#

for (int i = GridViewPays.Rows.Count; i >= 0; i--)