DataGridView Change DataGridViewTextBoxCell to DataGridViewComboBoxCell

[Theone2k]

Hi,

I'm having a problem when trying to convert an DataGridViewCell at runtime. from what i can see this is a knowen issue but i cant get the workaround to work for me. this is what i have

public Form1()
    {
      InitializeComponent();

      Main.Columns.Add("Period", typeof(int));
      Main.Columns.Add("Type", typeof(int));

      Main.Rows.Add(1, 1);
      Main.Rows.Add(1, 2);
      Main.Rows.Add(1, 3);
      Main.Rows.Add(2, 1);
      Main.Rows.Add(2, 2);
      Main.Rows.Add(2, 3);

      Periods.Columns.Add("Code", typeof(int));
      Periods.Columns.Add("Desc", typeof(String));

      Periods.Rows.Add(1, "Jan");
      Periods.Rows.Add(2, "Feb");

      Types.Columns.Add("Code", typeof(int));
      Types.Columns.Add("Desc", typeof(String));

      Types.Rows.Add(1, "Int");
      Types.Rows.Add(2, "String");
      Types.Rows.Add(3, "Float");

      dgv.DataSource = Main;

      dgv.DataBindingComplete += new DataGridViewBindingCompleteEventHandler(dgv_DataBindingComplete);

    }

    void dgv_DataBindingComplete(object sender, DataGridViewBindingCompleteEventArgs e)
    {
      dgv.DataBindingComplete -= new DataGridViewBindingCompleteEventHandler(dgv_DataBindingComplete);
      dgv.RowEnter += new DataGridViewCellEventHandler(dgv_RowEnter);
      dgv.RowLeave += new DataGridViewCellEventHandler(dgv_RowLeave);
    }

    void dgv_RowLeave(object sender, DataGridViewCellEventArgs e)
    {
      foreach (DataGridViewColumn c in this.dgv.Columns)
      {
        this.dgv[c.Index, e.RowIndex] = new DataGridViewTextBoxCell();
      }
    }

void dgv_RowEnter(object sender, DataGridViewCellEventArgs e)
    {
      foreach (DataGridViewColumn c in this.dgv.Columns)
      {
        this.dgv[c.Index, e.RowIndex] = new DataGridViewComboBoxCell();


        switch (c.Index)
        {
          case 0:
            {
              ((DataGridViewComboBoxCell)this.dgv[c.Index, e.RowIndex]).DataSource = Periods;
              ((DataGridViewComboBoxCell)this.dgv[c.Index, e.RowIndex]).ValueMember = "Code";
              ((DataGridViewComboBoxCell)this.dgv[c.Index, e.RowIndex]).DisplayMember = "Desc";
              break;
            }
          case 1:
            {
              ((DataGridViewComboBoxCell)this.dgv[c.Index, e.RowIndex]).DataSource = Types;
              ((DataGridViewComboBoxCell)this.dgv[c.Index, e.RowIndex]).ValueMember = "Code";
              ((DataGridViewComboBoxCell)this.dgv[c.Index, e.RowIndex]).DisplayMember = "Desc";
              break;
            }
        }

      }
    }

Ok so on Row leave i want to set everyting back to textboxcells

on Row Enter i want to set the current row to ComboBoxCells

this works ok unless i select Cell (0,0) / (1,1) then select another cell i get this error on the RowLeave "Operation is not valid because it results in a reentrant call to the SetCurrentCellAddressCore function"


Can anyone help please

[poptcat]

Hi. I used CellClick and CellValidating and I had to solve the "reentrant call" problem - finally I find the solution on the net.
I explained it here:
Dynamically change DataGridViewTextBoxCell to DataGridViewComboBoxCell