DataTable andere Spalte in Tabelle hinzufügen

Question

Ich habe diese Tabelle erstellt und das Ergebnis lautet wie folgt.

Der Code, den ich verwendet, um diese Tabelle zu erstellen, ist wie folgt. und es funktioniert richtig für mich

DataTable dt1 = new DataTable("Table1"); 

dt1.Columns.Add("Num", typeof(Int32)); 
dt1.Columns.Add("date", typeof(string)); 
dt1.Columns.Add("name", typeof(string)); 
dt1.Columns.Add("product1a", typeof(Int32)); 
dt1.Columns.Add("product1b", typeof(Int32)); 
dt1.Columns.Add("total1", typeof(Int32)); 
dt1.Columns.Add("product2a", typeof(Int32)); 
dt1.Columns.Add("product2b", typeof(Int32)); 
dt1.Columns.Add("product2c", typeof(Int32)); 
dt1.Columns.Add("total2", typeof(Int32)); 

object[] o1 = { 1, "10/10/2017", "name 1", 1, 2, 3, 1, 1, 1, 3 }; 
object[] o2 = { 2, "20/10/2017", "name 2", 2, 2, 4, 2, 1, 2, 5 }; 
object[] o3 = { 3, "15/08/2017", "name 3", 1, 3, 4, 4, 0, 0, 4 }; 

dt1.Rows.Add(o1); 
dt1.Rows.Add(o2); 
dt1.Rows.Add(o3);    

var grid = new GridView(); 
grid.DataSource = dt1; 
grid.DataBind(); 

Response.ClearContent(); 
Response.Buffer = true; 
Response.AddHeader("content-disposition", "attachment; filename=ExportFetsVinculats.xls"); 
Response.ContentType = "application/ms-excel"; 

Response.Charset = ""; 
StringWriter sw = new StringWriter(); 
HtmlTextWriter htw = new HtmlTextWriter(sw); 

grid.RenderControl(htw); 

Response.Output.Write(sw.ToString()); 
Response.Flush(); 
Response.End(); 
return Content(""); 

up richtig hier ist alles, aber man würde die Tabelle der folgenden Art und Weise zu implementieren.

Ist es möglich, mehr Spalten hinzufügen zwei, die als Header handeln?

Answer 1

Dies ist der Code mit der einfachen Lösung:

DataTable dt1 = new DataTable("Table1"); 

dt1.Columns.Add("Num", typeof(Int32)); 
dt1.Columns.Add("date", typeof(string)); 
dt1.Columns.Add("name", typeof(string)); 
dt1.Columns.Add("product1a", typeof(Int32)); 
dt1.Columns.Add("product1b", typeof(Int32)); 
dt1.Columns.Add("total1", typeof(Int32)); 
dt1.Columns.Add("product2a", typeof(Int32)); 
dt1.Columns.Add("product2b", typeof(Int32)); 
dt1.Columns.Add("product2c", typeof(Int32)); 
dt1.Columns.Add("total2", typeof(Int32)); 

object[] o1 = { 1, "10/10/2017", "name 1", 1, 2, 3, 1, 1, 1, 3 }; 
object[] o2 = { 2, "20/10/2017", "name 2", 2, 2, 4, 2, 1, 2, 5 }; 
object[] o3 = { 3, "15/08/2017", "name 3", 1, 3, 4, 4, 0, 0, 4 }; 

dt1.Rows.Add(o1); 
dt1.Rows.Add(o2); 
dt1.Rows.Add(o3); 

GridView grid = new GridView();      

grid.DataSource = dt1; 
grid.DataBind(); 

GridView HeaderGrid = grid; 
GridViewRow HeaderGridRow = new GridViewRow(0, 0, DataControlRowType.Header, DataControlRowState.Insert); 

TableCell HeaderCell = new TableCell(); 
HeaderCell.Text = ""; 
HeaderCell.ColumnSpan = 3; 
HeaderGridRow.Cells.Add(HeaderCell); 

HeaderCell = new TableCell(); 
HeaderCell.Text = "Head Products 1"; 
HeaderCell.ColumnSpan = 3; 
HeaderCell.Font.Bold = true; 
HeaderCell.HorizontalAlign = HorizontalAlign.Center; 
HeaderGridRow.Cells.Add(HeaderCell); 

HeaderCell = new TableCell(); 
HeaderCell.Text = "Head Products 2"; 
HeaderCell.ColumnSpan = 4; 
HeaderCell.Font.Bold = true; 
HeaderCell.HorizontalAlign = HorizontalAlign.Center; 
HeaderGridRow.Cells.Add(HeaderCell); 

HeaderGrid.Controls[0].Controls.AddAt(0, HeaderGridRow); 

Response.ClearContent(); 
Response.Buffer = true; 
Response.AddHeader("content-disposition", "attachment; filename=ExportFetsVinculats.xls"); 
Response.ContentType = "application/ms-excel"; 

Response.Charset = ""; 
StringWriter sw = new StringWriter(); 
HtmlTextWriter htw = new HtmlTextWriter(sw); 

grid.RenderControl(htw); 

Response.Output.Write(sw.ToString()); 
Response.Flush(); 
Response.End(); 
return Content(""); 

Oder:

public ActionResult retorna_excel_FetsVinculats2() 
{ 
    DataTable dt1 = new DataTable("Table1"); 

    dt1.Columns.Add("Num", typeof(Int32)); 
    dt1.Columns.Add("date", typeof(string)); 
    dt1.Columns.Add("name", typeof(string)); 
    dt1.Columns.Add("product1a", typeof(Int32)); 
    dt1.Columns.Add("product1b", typeof(Int32)); 
    dt1.Columns.Add("total1", typeof(Int32)); 
    dt1.Columns.Add("product2a", typeof(Int32)); 
    dt1.Columns.Add("product2b", typeof(Int32)); 
    dt1.Columns.Add("product2c", typeof(Int32)); 
    dt1.Columns.Add("total2", typeof(Int32)); 

    object[] o1 = { 1, "10/10/2017", "name 1", 1, 2, 3, 1, 1, 1, 3 }; 
    object[] o2 = { 2, "20/10/2017", "name 2", 2, 2, 4, 2, 1, 2, 5 }; 
    object[] o3 = { 3, "15/08/2017", "name 3", 1, 3, 4, 4, 0, 0, 4 }; 

    dt1.Rows.Add(o1); 
    dt1.Rows.Add(o2); 
    dt1.Rows.Add(o3); 

    GridView grid = new GridView();      

    grid.DataSource = dt1; 
    grid.DataBind(); 

    List<Tuple<string, int, bool, HorizontalAlign>> list_header = new List<Tuple<string, int, bool, HorizontalAlign>>(); 
    list_header.Add(new Tuple<string, int, bool, HorizontalAlign>("", 3, false, HorizontalAlign.Center)); 
    list_header.Add(new Tuple<string, int, bool, HorizontalAlign>("Head Products 1", 3, true, HorizontalAlign.Center)); 
    list_header.Add(new Tuple<string, int, bool, HorizontalAlign>("Head Products 2", 4, true, HorizontalAlign.Center));    

    get_header_table(grid, list_header); 

    Response.ClearContent(); 
    Response.Buffer = true; 
    Response.AddHeader("content-disposition", "attachment; filename=ExportFetsVinculats.xls"); 
    Response.ContentType = "application/ms-excel"; 

    Response.Charset = ""; 
    StringWriter sw = new StringWriter(); 
    HtmlTextWriter htw = new HtmlTextWriter(sw); 

    grid.RenderControl(htw); 

    Response.Output.Write(sw.ToString()); 
    Response.Flush(); 
    Response.End(); 
    return Content(""); 
} 

private void get_header_table(GridView grid, List<Tuple<string, int, bool, HorizontalAlign>> list_header) 
{ 
    GridView HeaderGrid = grid; 
    GridViewRow HeaderGridRow = new GridViewRow(0, 0, DataControlRowType.Header, DataControlRowState.Insert); 

    TableCell HeaderCell = new TableCell(); 

    foreach (Tuple<string, int, bool, HorizontalAlign> item in list_header) 
    { 
     HeaderCell = new TableCell(); 
     HeaderCell.Text = item.Item1; 
     HeaderCell.ColumnSpan = item.Item2; 
     HeaderCell.Font.Bold = item.Item3; 
     HeaderCell.HorizontalAlign = item.Item4; 
     HeaderGridRow.Cells.Add(HeaderCell); 
    } 

    HeaderGrid.Controls[0].Controls.AddAt(0, HeaderGridRow); 
}