fCraft.ConfigGUI.MainForm.tPrefix_Validating C# (CSharp) Метод

        private void tPrefix_Validating( object sender, CancelEventArgs e )
        {
            if ( selectedRank == null )
                return;
            tPrefix.Text = tPrefix.Text.Trim();
            if ( tPrefix.Text.Length > 0 && !Rank.IsValidPrefix( tPrefix.Text ) ) {
                MessageBox.Show( "Invalid prefix character!\n" +
                    "Prefixes may only contain characters that are allowed in chat (except space).", "Warning" );
                tPrefix.ForeColor = System.Drawing.Color.Red;
                e.Cancel = true;
            } else {
                tPrefix.ForeColor = SystemColors.ControlText;
            }
            if ( selectedRank.Prefix == tPrefix.Text )
                return;

            string oldName = MainForm.ToComboBoxOption( selectedRank );

            // To avoid DataErrors in World tab's DataGridView while renaming a rank,
            // the new name is first added to the list of options (without removing the old name)
            rankNameList.Insert( selectedRank.Index + 1, String.Format( "{0,1}{1}", tPrefix.Text, selectedRank.Name ) );

            selectedRank.Prefix = tPrefix.Text;

            // Remove the old name from the list of options
            rankNameList.Remove( oldName );

            Worlds.ResetBindings();
            RebuildRankList();
        }