How to maintain autonumber in rows header when sorting

Question

0.00/5 (No votes)

See more:

Hello,

i have unbound datagridview and i added autonumber in rows header.
I also added autonumber in first column cells but lets focus just on rows header.
Problem is when i sort the grid by values from some column the numbers in rows header lose order.
To be precise i want to have 1,2,3,4,5...ALWAYS in row header in that order,no mather what sorting i am doing on the grid.
Tried to find solution by changing again the row headers in grids events 'Sorted' and 'SortCompare' but with no luck.
Here is my code where on Initialisation i am adding some names from the list and autonumbers in first two columns and adding autonumbers to row header.

C#

public Form3(List<string>; list, int brojkola)
{
   InitializeComponent();
   this.WindowState = FormWindowState.Maximized;

   dodajkolone(brojkola);

   foreach (string igrac in list)
   {
      this.dataGridView1.Rows.Add();
      this.dataGridView1.Rows[list.IndexOf(igrac)].Cells[1].Value = igrac;
      int rednibroj = list.IndexOf(igrac);
      this.dataGridView1.Rows[rednibroj].Cells[0].Value = rednibroj + 1;
      setRowNumber(dataGridView1);
   }

   dataGridView1.Refresh();
}

private void setRowNumber(DataGridView dgv)
{
   int broj = 1;
   foreach (DataGridViewRow r in dgv.Rows)
   {
      r.HeaderCell.Value = (broj).ToString();
      //dgv.Rows[r.Index].HeaderCell.Value = (r.Index + 1).ToString();
      broj++;
   }
}

Is there any way to prevent first column to be sorted when user sort on some other column or to prevent rows header to be sorted and stay always like autonumber 1,2,3,4...or is there any way after sorting by a column to put some code in some event to display numbers in row header in order i want.What event i should use for that.

Posted 18-Apr-15 4:11am

SasaMiric

Updated 18-Apr-15 12:16pm

Nelek

v2

Add a Solution

2 solutions

Solution 2

Thank you so much!

As i already say :"Tried to find solution by changing again the row headers in grids events 'Sorted' and 'SortCompare' but with no luck."

tried to reorder rows header in the datagreedview Sorted event but i guess i did something wrong.

Posted 18-Apr-15 6:06am

SasaMiric

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)

OriginalGriff · Accepted Answer · 2015-04-18T04:46:00

If you always want the same numbers in your how headers, that's pretty easy.
So if you want:

1  AAA
2  AAB
3  BAA
4  CAA

And

VB

1  CAA
2  BAA
3  AAB
4  AAA

Then just handle the Sorted event for the DGV:

C#

private void myDataGridView_Sorted(object sender, EventArgs e)
    {
    DataGridView dgv = sender as DataGridView;
    if (dgv != null)
        {
        ReNumberRows(dgv);
        }
    }

private void ReNumberRows(DataGridView dgv)
    {
    int i = 0;
    foreach (DataGridViewRow row in dgv.Rows)
        {
        row.HeaderCell.Value = (++i).ToString();
        }
    }