我有一个asp.net网页，允许手动输入记录，或从excel电子表格导入以导入多个记录。
在任一进程添加记录后，它们将显示在Gridview控件中（绑定到SQLDataReader）。这允许用户在提交整个数据集进行处理之前编辑或删除记录。
我使用Ajax Toolkit AsyncFileUpload控件来处理导入。 UploadedComplete c＃函数正常运行，并将记录插入SQL表中。然后代码调用我的DataBindGrid（）函数来刷新网格。我可以逐步执行代码并看到每一行都在执行，但是，即使逐步完成调试，它似乎也从未真正完成。
实际上没有完成两个步骤，网格刷新和标签显示，向用户表明过程已完成。
出于测试目的，我添加了一个在单击时调用BindDataGrid（）的linkButton。这可以刷新网格并显示状态标签。它不是一个永久的解决方案，让用户记住刷新风险太大，他们可能会认为他们的所有记录都已提交。
起初我认为我的问题是尝试在UploadComplete函数中做更多事情，然后只上传文件（我正在阅读上传的Excel文件），所以我打破了代码并添加了一个按钮用户单击以启动实际数据处理。这失败了，因为虽然我可以看到在UploadComplete函数期间文件名被保存为隐藏形式，但当我去读取该隐藏字段时，数据不再存在。我没有丢失任何其他隐藏字段中的值。
我已经研究了3天了，我真的卡住了。我假设我遇到了回发问题，但目前还没有任何线索。
这是我的代码：
<%@ Page Title="" Language="C#" MasterPageFile="~/WTIMS.Master" AutoEventWireup="true" CodeBehind="OptionsEntry.aspx.cs" Inherits="WTIMS_OptionsEntry.Pages.OptionsEntry" %>
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="asp" %>
<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" runat="server">
<script type="text/javascript" language=javascript>
function uploadError(sender, args) {
var errMsg = args.get_errorMessage();
updateUploadStatus("error", errMsg);
}
function updateUploadStatus(status, message) {
var uploadStatLabel = document.getElementById('ContentPlaceHolder1_lblError');
uploadStatLabel.innerText = message;
if (status == "error") {
uploadStatLabel.className = "LabelErrorMessage";
}
else {
uploadStatLabel.className = "LabelScucessMessage";
}
}
function startUpload(sender, args) {
var fileName = args.get_fileName();
var fileExt = fileName.substring(fileName.lastIndexOf(".") + 1);
if (fileExt == "xlsx") {
return true;
}
else {
var err = new Error()
err.name = "Upload Error";
err.message = "Only .xlsx files can be uploaded";
throw (err);
return false;
}
}
function uploadComplete(sender, args) {
var rowCount = sender.rowCount;
}
</script>
<asp:ToolkitScriptManager ID="ToolkitScriptManager1" runat="server">
</asp:ToolkitScriptManager>
<table width = 100% cellpadding=1>
<tr>
<td colspan=2>
<asp:Label ID="Label19" runat="server" Text="Upload batch" CssClass=LabelInfo></asp:Label>
</td>
</tr>
<tr>
<td width=50%>
<asp:AsyncFileUpload
ID="AsyncFileUpload1"
Width=400px
ThrobberID=Throbber
UploaderStyle=Modern
CompleteBackColor = "#9BCD9B"
ErrorBackColor="#D44942"
OnClientUploadStarted="startUpload"
OnClientUploadError="uploadError"
OnClientUploadComplete="uploadComplete"
OnUploadedComplete=AsyncFileUpload1_UploadedComplete
OnUploadedFileError=AsyncFileUpload1_UploadedFileError
UploadingBackColor=AliceBlue
runat="server" />
<asp:Label ID="Throbber" runat="server" Text="Label" Style="display:none">
<img src="../../images/LoadingWait.gif" alt="loading" />
</asp:Label>
</td>
</tr>
<tr>
<td>
<asp:LinkButton ID="lkbRefresh" CssClass=linkButton
Text = "Records Upload, Click to View" runat="server"
onclick="lkbRefresh_Click">LinkButton</asp:LinkButton>
</td>
</tr>
<tr>
<td>
<asp:Label ID="lblError" runat="server" Text="" CssClass="LabelErrorMessage"></asp:Label>
</td>
</tr>
<tr>
<td>
<asp:Label ID="lblStatus" runat="server" Text="" CssClass=LabelFormLabel></asp:Label>
</td>
</tr>
</table>
网格的asp.net代码：
<table>
<tr>
<td>
<asp:Label ID="Label18" runat="server" Text="Pending Options" CssClass=LabelInfo></asp:Label>
</td>
</tr>
<tr>
<td>
<asp:Button ID="btnSubmit" runat="server" Text="Submit Pending Options"
CssClass=button onclick="btnSubmit_Click" />
</td>
</tr>
<tr>
<td>
<asp:GridView ID="grdOptions"
runat="server"
AutoGenerateColumns="False"
DataKeyNames="OptionRecordID"
EmptyDataText="You Have no pending Options"
onrowdatabound="grdOptions_RowDataBound">
<FooterStyle CssClass="FooterStyle" />
<HeaderStyle CssClass="HeaderStyle" />
<RowStyle CssClass="RowStyle" />
<AlternatingRowStyle CssClass="AlternatingRowStyle" />
<PagerStyle CssClass="PagerStyle" />
<Columns>
<asp:TemplateField>
<EditItemTemplate>
<asp:LinkButton ID="lkbSave" runat="server" Text= "Save" CssClass=linkButton onclick="lkbSave_Click"></asp:LinkButton>
<asp:LinkButton ID="lkbCancek" runat="server" Text="Cancel" CssClass=linkButton onclick="lkbCancel_Click"></asp:LinkButton>
</EditItemTemplate>
<ItemTemplate>
<asp:LinkButton ID="lkbEdit" runat="server" Text= "Edit" CssClass=linkButton onclick="lkbEdit_Click"></asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="OptionRecordID" InsertVisible="False"
SortExpression="OptionRecordID" Visible="False">
<EditItemTemplate>
<asp:Label ID="lblOptionIDEdit" runat="server" Text='<%# Eval("OptionRecordID") %>'></asp:Label>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="lblOptionID" runat="server" Text='<%# Bind("OptionRecordID") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="SecurityID" SortExpression="SecurityID">
<ItemTemplate>
<asp:Label ID="Label2" runat="server" Text='<%# Bind("SecurityID") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Symbol" SortExpression="Symbol">
<EditItemTemplate>
<asp:TextBox ID="txtSymbolEdit" Width=75px runat="server" Text='<%# Bind("Symbol") %>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="Label3" runat="server" Text='<%# Bind("Symbol") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Call/Put" SortExpression="CallPut">
<EditItemTemplate>
<asp:DropDownList ID="ddlPutCallEdit" runat="server" CssClass=dropdownList SelectedValue='<%# Bind("CallPut") %>'>
<asp:ListItem Text="Select" Value="Select"></asp:ListItem>
<asp:ListItem Text ="Put" Value = "Put"></asp:ListItem>
<asp:ListItem Text ="Call" Value = "Call"></asp:ListItem>
</asp:DropDownList>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="Label4" runat="server" Text='<%# Bind("CallPut") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Buy Write" SortExpression="BuyWrite">
<EditItemTemplate>
<asp:DropDownList ID="ddlWtriteBuyEdit" runat="server" CssClass=dropdownList SelectedValue='<%# Bind("BuyWrite") %>'>
<asp:ListItem Text="Select" Value="Select"></asp:ListItem>
<asp:ListItem Text ="Buy" Value = "Buy"></asp:ListItem>
<asp:ListItem Text ="Write" Value = "Write"></asp:ListItem>
</asp:DropDownList>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="Label8" runat="server" Text='<%# Bind("BuyWrite") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Price" SortExpression="Price">
<EditItemTemplate>
<asp:TextBox ID="txtPriceEdit" Width=75px runat="server" Text='<%# Bind("Price") %>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="Label5" runat="server" Text='<%# Bind("Price") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Expiration Date" SortExpression="ExpirationDate">
<EditItemTemplate>
<asp:TextBox ID="txtExpirationDateEdit" Width=100px runat="server" Text='<%# Convert.ToDateTime(Eval("ExpirationDate")).ToString("d") %>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="Label6" runat="server" Text='<%# Convert.ToDateTime(Eval("ExpirationDate")).ToString("d") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Description" SortExpression="Description">
<EditItemTemplate>
<asp:TextBox ID="txtDescriptionEdit" runat="server" Text='<%# Bind("Description") %>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="Label7" runat="server" Text='<%# Bind("Description") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="UploadStatus" SortExpression="UploadStatus">
<ItemTemplate>
<asp:Label ID="lblStatus" runat="server" Text='<%# Bind("UploadStatus") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<ItemTemplate>
<asp:LinkButton ID="lkbDelete" runat="server" CssClass=linkButton Text="Delete" onclick="lkbDelete_Click"></asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
</td>
</tr>
</table>
C＃代码：
protected void AsyncFileUpload1_UploadedComplete(object sender, AjaxControlToolkit.AsyncFileUploadEventArgs e)
{
strFileName = Server.MapPath("~/Files/" + this.hdnSessionID.Value + "_uploaded.xlsx");
string strUploadFileName = AsyncFileUpload1.FileName.ToString();
InsertData.InsertLogMessage("File to upload: " + strFileName, "OptionsEntry", this.hdnUserID.Value);
this.hdnUploadFileName.Value = strFileName;
AsyncFileUpload1.SaveAs(strFileName);
InsertData.InsertLogMessage("File saved: " + strFileName, "OptionsEntry", this.hdnUserID.Value);
UploadData(strFileName);
DataBindGrid();
}
protected void UploadData(string strUploadFileName)
{ //process the file that was uploaded
try
{
InsertData.InsertLogMessage("Starting Upload", "OptionsEntry", this.hdnUserID.Value);
int i = 0;
// string strFileName = this.hdnUploadFileName.Value;
FileStream myStream = File.Open(strUploadFileName, FileMode.Open, FileAccess.Read);
IExcelDataReader myReader = ExcelReaderFactory.CreateOpenXmlReader(myStream);
myReader.IsFirstRowAsColumnNames = true;
DataSet result = myReader.AsDataSet();
foreach (DataTable dt in result.Tables)
{
foreach (DataRow dr in dt.Rows)
{
Boolean blnIsValid = true;
//code here to loop through file and insert records
InsertData.InsertOptionEntryFormData(strSymbol, strCallPut, strUnformattedPrice, dtmExpirationDate, strDescription, strBuyWrite, this.hdnUserID.Value, strTicker, strStatus);
i = i + 1;
}
}
this.lblStatus.Text = i + " records have been imported to the pending table. Please review and correct any errors before submitting.";
InsertData.InsertLogMessage( i + " records have been imported", "OptionsEntry", this.hdnUserID.Value);
DataBindGrid();
}
catch (Exception ex)
{
InsertData.InsertLogMessage("An error occured: " + ex.Message, "OptionsEntry", this.hdnUserID.Value);
this.lblStatus.Text = "There was a problem importing the data, please check the file and try again.";
}
}
protected void DataBindGrid()
{
this.grdOptions.DataSource = GetData.GetOptionEntryFormData(this.hdnUserID.Value);
this.grdOptions.DataBind();
}
任何建议都将不胜感激！
恭
编辑 - grdOptions的代码
protected void grdOptions_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
Label lblStatus = (Label)e.Row.Cells[9].Controls[1];
if (lblStatus.Text == "Invalid")
{
e.Row.CssClass = "RowError";
}
else
{
if (e.Row.RowState == DataControlRowState.Alternate)
{
e.Row.CssClass = "AlternatingRowStyle";
}
else
{
e.Row.CssClass = "RowStyle";
}
}
}
}
#region Grid Link Actions
protected void lkbSave_Click(object sender, EventArgs e)
{
this.lblErrorMessage.Visible = false;
ClearFormColor();
Boolean blnIsValid = true; //start off assuming everthing is valid
//get the row that we are sitting on
WebControl wc = (WebControl)sender;
GridViewRow row = (GridViewRow)wc.NamingContainer;
//get the data we need
Label lblOptionIDEdit = (Label)row.FindControl("lblOptionIDEdit");
int intOptionIDEdit = int.Parse(lblOptionIDEdit.Text);
TextBox txtSymbolEdit = (TextBox)row.FindControl("txtSymbolEdit");
strSymbol = txtSymbolEdit.Text;
if(!ValidateSymbol())
{
ToggleTextBoxColor(false,txtSymbolEdit);
blnIsValid = false;
}
DropDownList ddlPutCallEdit = (DropDownList)row.FindControl("ddlPutCallEdit");
strCallPut = ddlPutCallEdit.SelectedValue;
if(!ValidateCallPut())
{
ToggleDropDownColor(false,ddlPutCallEdit);
blnIsValid = false;
}
DropDownList ddlWtriteBuyEdit = (DropDownList)row.FindControl("ddlWtriteBuyEdit");
strBuyWrite = ddlWtriteBuyEdit.SelectedValue;
if(!ValidateBuyWrite())
{
ToggleDropDownColor(false,ddlWtriteBuyEdit);
blnIsValid= false;
}
TextBox txtPriceEdit = (TextBox)row.FindControl("txtPriceEdit");
strPrice = txtPriceEdit.Text;
if(!ValidateStrikePrice())
{
ToggleTextBoxColor(false,txtPriceEdit);
blnIsValid= false;
}
TextBox txtExpirationDateEdit = (TextBox)row.FindControl("txtExpirationDateEdit");
strExpirationDate = txtExpirationDateEdit.Text;
if(!ValidateExpirationDate())
{
ToggleTextBoxColor(false,txtExpirationDateEdit);
blnIsValid = false;
}
TextBox txtDescriptionEdit = (TextBox)row.FindControl("txtDescriptionEdit");
strDescription = txtDescriptionEdit.Text;
if(!blnIsValid)
{
this.lblErrorMessage.Text = "Please corrext the data highlighted in yellow";
this.lblErrorMessage.Visible= true;
return;
}
FormatTicker();
//update the data
UpdateData.UpdateOptionEntryFormData(intOptionIDEdit, strSymbol, strCallPut, strUnformattedPrice, dtmExpirationDate, strDescription, strBuyWrite, strTicker, "Manual");
//refresh the grid
this.grdOptions.EditIndex = -1;
DataBindGrid();
}
protected void lkbEdit_Click(object sender, EventArgs e)
{
WebControl wc = (WebControl)sender;
GridViewRow row = (GridViewRow)wc.NamingContainer;
int intIndex = row.RowIndex;
this.grdOptions.EditIndex = intIndex;
DataBindGrid();
}
protected void lkbDelete_Click(object sender, EventArgs e)
{
//get the row that we are sitting on
WebControl wc = (WebControl)sender;
GridViewRow row = (GridViewRow)wc.NamingContainer;
//get the data we need
Label lblRecordID = (Label)row.FindControl("lblOptionID");
int intRecordID = int.Parse(lblRecordID.Text);
//delete the record
DeleteData.DeleteOption(intRecordID);
//refresh the grid
DataBindGrid();
}
protected void lkbCancel_Click(object sender, EventArgs e)
{
this.grdOptions.EditIndex = -1;
}
#endregion