Question

我将以下代码在gridview列中显示为行：

代码背后：

protected void Page_Load(object sender, EventArgs e)
{
    gvOrdersProcessed.DataSource = FlipDataTable(BindOrdersProcessed());
    gvOrdersProcessed.DataBind();
}

public DataTable BindOrdersProcessed()
{
    SqlConnection Conn = new SqlConnection(ConfigurationManager.ConnectionStrings["WO_StatusConnectionString"].ToString());
    SqlCommand Cmd = new SqlCommand("sp_B2B_GetOrdersProcessed", Conn);
    Cmd.CommandType = CommandType.StoredProcedure;           

    SqlDataAdapter ada = new SqlDataAdapter(Cmd);
    DataTable dt = new DataTable();
    ada.Fill(dt);
    return dt;
}

public DataTable FlipDataTable(DataTable dt)
{
     DataTable table = new DataTable();

     //Get all the rows and change into columns
     for (int i = 0; i <= dt.Rows.Count; i++)            
         table.Columns.Add(Convert.ToString(i));            

     DataRow dr;

     //get all the columns and make it as rows
     for (int j = 0; j < dt.Columns.Count; j++)
     {
          dr = table.NewRow();
          dr[0] = dt.Columns[j].ToString();
          for (int k = 1; k <= dt.Rows.Count; k++)
              dr[k] = dt.Rows[k - 1][j];
          table.Rows.Add(dr);
     }

     return table;
}

在我的HTML中：

<div id="GridOrdersProcessed">
        <asp:GridView ID="gvOrdersProcessed" runat="server">
        </asp:GridView>
    </div>

现在运行以上内容时，我将数字作为标题：

0                    1          2          3          4          5          6 
DateCreate           02/11/2013 02/19/2013 02/21/2013 02/25/2013 02/26/2013 02/27/2013 
OrdersPendingInvoice 0          0          0          0          0          0 
OrdersPendingPickUp  1          1          2          1          7          9

为什么会这样？

另外，如何添加一个包含以下总订单的新列：

DateCreate           Total 02/11/2013 02/19/2013 02/21/2013 02/25/2013 02/26/2013 02/27/2013 
OrdersPendingInvoice 0     0          0          0          0          0          0 
OrdersPendingPickUp  21    1          1          2          1          7          9

Answer 1

您正在将数字作为标题，因为您已在此处创建了带有数字名称的DataColumns：

public DataTable FlipDataTable(DataTable dt)
{
    DataTable table = new DataTable();
    //Get all the rows and change into columns
    for (int i = 0; i <= dt.Rows.Count; i++)
        table.Columns.Add(Convert.ToString(i));

你可能想要这样的事情：

for (int i = 0; i < dt.Rows.Count; i++) 
     table.Columns.Add(Convert.ToString(dt.Rows[i][0]));

另请注意，我已在循环中将<=更改为i <。

编辑：但我担心该方法不符合预期（反转行和列的角色也称为 pivot ）。

您可以使用此扩展方法：

public static DataTable Pivot(this DataTable tbl)
{
    var tblPivot = new DataTable();
    tblPivot.Columns.Add(tbl.Columns[0].ColumnName);
    for (int i = 1; i < tbl.Rows.Count; i++)
    {
        tblPivot.Columns.Add(Convert.ToString(i));
    }
    for (int col = 0; col < tbl.Columns.Count; col++)
    {
        var r = tblPivot.NewRow();
        r[0] = tbl.Columns[col].ToString();
        for (int j = 1; j < tbl.Rows.Count; j++)
            r[j] = tbl.Rows[j][col];

        tblPivot.Rows.Add(r);
    }
    return tblPivot;
}

更新也许这个linq查询有助于在转动表格之前获取总列数：

int OrdersPendingInvoiceTotal= tbl.AsEnumerable()
    .Sum(r => r.Field<int>("OrdersPendingInvoice"));
int OrdersPendingPickUpTotal= tbl.AsEnumerable()
    .Sum(r => r.Field<int>("OrdersPendingPickUp"));

gridview显示标题中的数字而不是列asp.net c＃

1 个答案: