Question

在asp.net c＃中，当flag ='D'为sumDebt时，我试图返回总和当flag ='C'作为sumcredit时的总和我的代码是：

    SqlParameter[] para = new SqlParameter[4];
    para[0] = new SqlParameter("@stat_leger", ddlACCcode.SelectedValue);
    para[1] = new SqlParameter("@branch", DDLBranch.SelectedValue);
    para[2] = new SqlParameter("@from", db.getDate(txtFrom.Text));
    para[3] = new SqlParameter("@to", db.getDate(txtTo.Text));

    DataTable dtreport = db.SelectCmdText("Select sum(stat_amount) as sumDebt from PostedVoucher where stat_flag ='D' and stat_leger =@stat_leger and branch=@branch and stat_date between @from and @to UNION Select sum(stat_amount) as sumcredit from PostedVoucher where stat_flag ='C' and stat_leger =@stat_leger and branch=@branch  and stat_date between @from and @to ", para);

    GridView1.DataSource = dtreport;
    GridView1.DataBind();

在html网格视图中：

  <asp:TemplateField HeaderText="sumDebt">
            <ItemTemplate>
                 <asp:Label ID="sumDebt" runat="server" Text='<%#string.Format("{0:0.000}",float.Parse(Eval("sumDebt").ToString()))%>'></asp:Label>
            </ItemTemplate>
        </asp:TemplateField>

            <asp:TemplateField HeaderText="sumcredit">
            <ItemTemplate>
                 <asp:Label ID="sumcredit" runat="server" Text='<%#string.Format("{0:0.000}",float.Parse(Eval("sumcredit").ToString()))%>'></asp:Label>
            </ItemTemplate>
        </asp:TemplateField>

在gridview中它返回错误的问题（DataBinding：'System.Data.DataRowView'不包含名为'sumcredit'的属性。）

Answer 1

您可以使用Eval的第二个参数来格式化结果字符串：

<%# Eval("sumDebt", "{0:c}")%>

Answer 2

要合并表，请尝试这样： -

    SqlConnection conn = new SqlConnection("connectionString");
    SqlCommand cmd = new SqlCommand("Select sum(stat_amount) as sumDebt from PostedVoucher where stat_flag ='D' and stat_leger =@stat_leger and branch=@branch and stat_date between @from and @to UNION Select sum(stat_amount) as sumcredit from PostedVoucher where stat_flag ='C' and stat_leger =@stat_leger and branch=@branch  and stat_date between @from and @to", conn);
    cmd.Parameters.AddWithValue("@stat_leger", ddlACCcode.SelectedValue);
    cmd.Parameters.AddWithValue("@branch", DDLBranch.SelectedValue);
    cmd.Parameters.AddWithValue("@from", db.getDate(txtFrom.Text));
    cmd.Parameters.AddWithValue("@to", db.getDate(txtTo.Text));
    conn.Open();
    SqlDataAdapter adapter = new SqlDataAdapter(cmd);
    DataSet dataSet = new DataSet();
    adapter.Fill(dataSet);       


    DataTable tbl1 = dataSet.Tables[0];
    DataTable tbl2 = dataSet.Tables[1];
    tbl1.Columns.Add("sumcredit");

    for (int i = 0; i < tbl2.Rows.Count; i++)
    {
        DataRow dr = tbl2.Rows[i];
        DataRow dr1 = tbl1.Rows[i];
        foreach (DataColumn v_Column in dr.Table.Columns)
        {
            if (dr1.Table.Columns.Contains("sumcredit"))
            {
                dr1["sumcredit"] = dr["sumcredit"];
            }
        }
    }

如何从一个表中获取gridview中的数据，但是多个select语句

2 个答案: