Question

I have an application to generate dynamic reports using dynamic SQLs. The results of the query will be stored in datatables. I need a function to take the datatable and column width as input and print report in HTML/Text format. The function should identify correct data type of datacolumn and format it as per the data type.

I’ll write a query like this and fetch the values into data table:
SELECT [ID]
,[AccountName] AS [Account Name]
,[TransDate] AS [Trans Date]
,[Amount]
FROM [AccountsTable]

The following is the result set in datatable:
ID [Account Name] [Trans Date] [Amount]
656 Sales Account 14-Apr-2003 13500.00
657 Purchase Account 15-Apr-2003 2000.00
658 Cheque Account 15-Apr-2003 5250.00
659 Sales Account 16-Apr-2003 8000.00
660 Cheque Account 17-Apr-2003 6500.00
661 Purchase Account 18-Apr-2003 1000.00
662 Trade Account 18-Apr-2003 10250.00
663 Discount Account 19-Apr-2003 500.00
Totals: 47000.00

I would like to print these values into HTML File as shown above. Please help me.

Answer 1

protected void Page_Load(object sender, EventArgs e)
    {

        //make your own table here, whathever way you like ie get it from database
        DataTable dt = new DataTable();
        dt.Columns.Add("col1");
        dt.Columns.Add("col2");
        dt.Rows.Add(new object[] { "1", "2" });
        dt.Rows.Add(new object[] { "5", "6" });

        RenderTable(dt, 100);
    }

    private void RenderTable(DataTable datatable, int column_width)
    {
        Table table = new Table();

        //add header to your table 
        TableHeaderRow header = new TableHeaderRow();

        foreach (DataColumn dcol in datatable.Columns)
        {
            TableHeaderCell cell = new TableHeaderCell();
            cell.Width = column_width;

            Label headlbl = new Label();
            headlbl.Text = dcol.ColumnName;

            cell.Controls.Add(headlbl);
            header.Controls.Add(cell);
        }

        table.Controls.Add(header);

        //fill with data
        foreach (DataRow row in datatable.Rows)
        {
            TableRow tr = new TableRow();
            for (int i = 0; i < datatable.Columns.Count; i++)
            {
                TableCell td = new TableCell();
                td.Width = column_width;

                Label label = new Label();
                label.Text = Convert(row[i], datatable.Columns[i].DataType);

                td.Controls.Add(label);
                tr.Controls.Add(td);
            }

            table.Controls.Add(tr);
        }

        //add other rows here ie totals

        Page.Controls.Add(table);

    }

    private string Convert(object val, Type type)
    {
        //do whatever you want with format of your cells
        return val.ToString();
    }