private void DataWrite_Load(object sender, EventArgs e)
        {
            string tabName = tablesBox.Text;

            labelBsource1.DataSource = Ds.Tables[tabName].Columns[0];
            labelBsource2.DataSource = Ds.Tables[tabName].Columns[1];
            labelBsource3.DataSource = Ds.Tables[tabName].Columns[2];

            labelBind1 = new Binding("Text", labelBsource1, "ColumnName");
            labelBind2 = new Binding("Text", labelBsource2, "ColumnName");
            labelBind3 = new Binding("Text", labelBsource3, "ColumnName");
            col1label.DataBindings.Add(labelBind1);
            col2label.DataBindings.Add(labelBind2);
            col3label.DataBindings.Add(labelBind3);
        }

        private void tablesBox_SelectedIndexChanged(object sender, EventArgs e)
        {
            string tabName = tablesBox.Text;

            labelBsource1.DataSource = Ds.Tables[tabName].Columns[0];
            labelBsource2.DataSource = Ds.Tables[tabName].Columns[1];
            labelBsource3.DataSource = Ds.Tables[tabName].Columns[2];
        }