C# All my combobox are changing text

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I’m having a problem with my program where when I change the values of one of my combobox, example:

private void Ex1Mat_SelectedIndexChanged(object sender, EventArgs e)
{
    if (start == false)
    {
        SqlDataAdapter Ex1UpdateAss = new SqlDataAdapter("select Assunto, id from dbo.Assuntos where Materia = " + Ex1Mat.Text + "", conex);
        Ex1UpdateAss.Fill(AssTable);
        Ex1Ass.DataSource = AssTable;
        Ex1Ass.DisplayMember = AssTable.Columns[0].ColumnName;
        Ex1Ass.ValueMember = AssTable.Columns[1].ColumnName;
    }
}

all change their DisplayMembers which in case was to change only one.

Do you have any idea what this is?

c# combobox

  • You have several combobox on your screen and when you call selectedindexchanged they all change too ? (other combos?) that’s it?

1 answer

1

It is possible that you have accidentally selected all Comboboxes when creating the event. In this case Visualstudio attaches the event code that should be on a single combobox to all those that were selected at the time. To get this, you will need the Designer.Cs code of the form in question. Take a look to see if the Selectindexchanged event of all of them is pointing to the same method.

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