我正在微软视觉工作室中编写一个网页，其中有一个显示报告的网格视图。我想有一个按钮将此gridview导出到csv文件 只要gridview有
，我就可以让导出按钮工作AutoGenerateColumns =“False”
但我需要AutoGenerateColumns为true，因为我使用此代码动态填充gridview。
enter code here
Dim gv As GridView = pnlGridViews.FindControl("gv0")
Dim lbl As Label = pnlGridViews.FindControl("lbl0")
gv.Visible = True
Dim sql As String = "select net_id, byu_id, rest_of_name || ' ' || last_name as NAME, acc_balance as HOUSING_AMOUNT, din_balance as DINING_AMOUNT, " & _
"(acc_balance + din_balance) as TOTAL from housing.PEOPLE where acc_balance >0 or din_balance > 0 order by net_id"
Dim result As CoreData
result = QueryDB.GetAllResultsCD(sql)
Dim dt As New DataTable()
'make the columns
dt.Columns.Add("NET_ID", Type.GetType("System.String"))
dt.Columns.Add("BYU_ID", Type.GetType("System.String"))
dt.Columns.Add("NAME", Type.GetType("System.String"))
dt.Columns.Add("HOUSING_AMOUNT", Type.GetType("System.String"))
dt.Columns.Add("DINING_AMOUNT", Type.GetType("System.String"))
dt.Columns.Add("TOTAL", Type.GetType("System.String"))
dt.Columns.Add("FaWi(HS)", Type.GetType("System.String"))
dt.Columns.Add("FaWi(MP)", Type.GetType("System.String"))
dt.Columns.Add("Wint(HS)", Type.GetType("System.String"))
dt.Columns.Add("Wint(MP)", Type.GetType("System.String"))
dt.Columns.Add("SpSu(HS)", Type.GetType("System.String"))
dt.Columns.Add("SpSu(MP)", Type.GetType("System.String"))
dt.Columns.Add("Sprg(HS)", Type.GetType("System.String"))
dt.Columns.Add("Sprg(MP)", Type.GetType("System.String"))
dt.Columns.Add("Sumr(HS)", Type.GetType("System.String"))
dt.Columns.Add("Sumr(MP)", Type.GetType("System.String"))
dt.Columns.Add("AcYr(HS)", Type.GetType("System.String"))
dt.Columns.Add("AcYr(MP)", Type.GetType("System.String"))
dt.Columns.Add("Else", Type.GetType("System.String"))
For Each person In result
dt.Rows.Add()
Dim fawi_hs As String = ""
Dim fawi_mp As String = ""
Dim wint_hs As String = ""
Dim wint_mp As String = ""
Dim spsu_hs As String = ""
Dim spsu_mp As String = ""
Dim spr_hs As String = ""
Dim spr_mp As String = ""
Dim sumr_hs As String = ""
Dim sumr_mp As String = ""
Dim acyr_hs As String = ""
Dim acyr_mp As String = ""
Dim yearly As String = ""
Dim meal_plan As String = ""
Dim bedspace As String = ""
Dim agr_prd As String = ""
Dim net_id As String = person("NET_ID")
Dim byu_id As String = person("BYU_ID")
Dim name As String = person("NAME")
Dim h_amt As String = person("HOUSING_AMOUNT")
Dim d_amt As String = person("DINING_AMOUNT")
Dim total As String = person("TOTAL")
Dim sql2 As String = "select item_type, common_id as byu_id, item_amt,applied_amt,(item_amt - applied_amt) as bal, ACCOUNT_TYPE_SF, item_term from link.ps_item_sf_lnk where " & _
"common_id = '" & byu_id & "' and ACCOUNT_TYPE_SF in ('ACC','DIN','DPH') and due_dt < sysdate and item_amt - applied_amt <> 0"
Dim result2 As CoreData
result2 = QueryDB.GetAllResultsCD(sql2)
If byu_id = "949888717" Then
'Hello
byu_id = byu_id
End If
For Each delinquent In result2
Dim term_id As String = delinquent("ITEM_TERM")
Dim sql_terms As String = "select * from housing.RS_SNG_CES_TERMS where ps_term_id = '" & term_id & "'"
Dim result_term As CoreData
result_term = QueryDB.GetOneResultCD(sql_terms)
Dim agr As String
If Not result_term Is Nothing Then
agr = result_term("AGR_PRD_ID")
Else
agr = "None"
End If
Dim act_type As String = delinquent("ACCOUNT_TYPE_SF")
Dim bal As Decimal = delinquent("BAL")
Dim current_sum As Decimal
If agr.EndsWith("FaWi") And act_type = "ACC" Then
current_sum = getCurrencyDecimal(fawi_hs)
fawi_hs = String.Format("{0:$#,##0.00}", bal + current_sum)
ElseIf agr.EndsWith("FaWi") And act_type = "DIN" Then
current_sum = getCurrencyDecimal(fawi_mp)
fawi_mp = String.Format("{0:$#,##0.00}", bal + current_sum)
ElseIf agr.EndsWith("Wint") And act_type = "ACC" Then
current_sum = getCurrencyDecimal(wint_hs)
wint_hs = String.Format("{0:$#,##0.00}", bal + current_sum)
ElseIf agr.EndsWith("Wint") And act_type = "DIN" Then
current_sum = getCurrencyDecimal(wint_mp)
wint_mp = String.Format("{0:$#,##0.00}", bal + current_sum)
ElseIf agr.EndsWith("Sumr") And act_type = "ACC" Then
current_sum = getCurrencyDecimal(sumr_hs)
sumr_hs = String.Format("{0:$#,##0.00}", bal + current_sum)
ElseIf agr.EndsWith("Sumr") And act_type = "DIN" Then
current_sum = getCurrencyDecimal(sumr_mp)
sumr_mp = String.Format("{0:$#,##0.00}", bal + current_sum)
ElseIf agr.EndsWith("Sprg") And act_type = "ACC" Then
current_sum = getCurrencyDecimal(spr_hs)
spr_hs = String.Format("{0:$#,##0.00}", bal + current_sum)
ElseIf agr.EndsWith("Sprg") And act_type = "DIN" Then
current_sum = getCurrencyDecimal(spr_mp)
spr_mp = String.Format("{0:$#,##0.00}", bal + current_sum)
ElseIf agr.EndsWith("SpSu") And act_type = "ACC" Then
current_sum = getCurrencyDecimal(spsu_hs)
spsu_hs = String.Format("{0:$#,##0.00}", bal + current_sum)
ElseIf agr.EndsWith("SpSu") And act_type = "DIN" Then
current_sum = getCurrencyDecimal(spsu_mp)
spsu_mp = String.Format("{0:$#,##0.00}", bal + current_sum)
ElseIf agr.EndsWith("AcYr") And act_type = "ACC" Then
current_sum = getCurrencyDecimal(acyr_hs)
acyr_hs = String.Format("{0:$#,##0.00}", bal + current_sum)
ElseIf agr.EndsWith("AcYr") And act_type = "DIN" Then
current_sum = getCurrencyDecimal(acyr_mp)
acyr_mp = String.Format("{0:$#,##0.00}", bal + current_sum)
Else
current_sum = getCurrencyDecimal(yearly)
yearly = String.Format("{0:$#,##0.00}", bal + current_sum)
End If
Next
dt.Rows(dt.Rows.Count - 1)("NET_ID") = net_id
dt.Rows(dt.Rows.Count - 1)("BYU_ID") = byu_id
dt.Rows(dt.Rows.Count - 1)("NAME") = name
If Not h_amt Is Nothing And Not h_amt = "" Then
dt.Rows(dt.Rows.Count - 1)("HOUSING_AMOUNT") = String.Format("`enter code here`{0:$#,##0.00}", Decimal.Parse(h_amt))
End If
If Not d_amt Is Nothing And Not d_amt = "" Then
dt.Rows(dt.Rows.Count - 1)("DINING_AMOUNT") = String.Format("`enter code here`{0:$#,##0.00}", Decimal.Parse(d_amt))
End If
If Not total Is Nothing And Not total = "" Then
dt.Rows(dt.Rows.Count - 1)("TOTAL") = String.Format("{0:$#,##0.00}", `enter code here`Decimal.Parse(total))
End If
dt.Rows(dt.Rows.Count - 1)("FaWi(HS)") = fawi_hs
dt.Rows(dt.Rows.Count - 1)("FaWi(MP)") = fawi_mp
dt.Rows(dt.Rows.Count - 1)("Wint(HS)") = wint_hs
dt.Rows(dt.Rows.Count - 1)("Wint(MP)") = wint_mp
dt.Rows(dt.Rows.Count - 1)("SpSu(HS)") = spsu_hs
dt.Rows(dt.Rows.Count - 1)("SpSu(MP)") = spsu_mp
dt.Rows(dt.Rows.Count - 1)("Sprg(HS)") = spr_hs
dt.Rows(dt.Rows.Count - 1)("Sprg(MP)") = spr_mp
dt.Rows(dt.Rows.Count - 1)("Sumr(HS)") = sumr_hs
dt.Rows(dt.Rows.Count - 1)("Sumr(MP)") = sumr_mp
dt.Rows(dt.Rows.Count - 1)("AcYr(HS)") = acyr_hs
dt.Rows(dt.Rows.Count - 1)("AcYr(MP)") = acyr_mp
dt.Rows(dt.Rows.Count - 1)("Else") = yearly
Next
gv.DataSource = dt
gv.DataBind()
lbl.Text = "<br/>Total Records: " & gv.Rows.Count & "<br/><br/>"
导出按钮的代码如下所示
enter code here尝试
Response.Clear()
Response.Buffer = True
Response.AddHeader("content-disposition", `enter code here`"attachment;filename=GridViewExport.csv")
Response.Charset = ""
Response.ContentType = "application/text"
'gv0.AllowPaging = False
'gv0.DataBind()
Dim exportStr As String = ""
exportStr &= Mha.GridViews.ToCSV(gv0) & Environment.NewLine
'append new line
Response.Output.Write(exportStr)
Response.Flush()
Response.End()
Catch ex As Exception
'do nothing
End Try
有关如何导出此gridview的任何想法，同时还允许我事先动态填充gridview？