我正在使用 Ajax TabContiner，并且在其中一个选项卡中我有一个 ListView。此 ListView 显示数据库中特定表内的所有项目。使用该 ListView，有一种方法可以为 ListView 中的选定项目创建 Word 文档。项目的选择将通过 ListView 第一列中提供的 CheckBox。一切正常。
现在，我想计算该表中的项目数。我写了这个方法，它工作得很好，但它使创建word文档的方法现在工作得很好。例如，在那个特定的选项卡中，我想在其中显示选项卡中项目的数量。如果我想在 Word 文档中打印一些选定的项目。Word 文档将打开，但没有任何数据。我不知道为什么。如果我删除了计数项目方法，它工作得很好。谁能帮我解决这个问题？
ASP.NET 代码：
<asp:TabContainer CssClass="ajax__tab_darkblue-theme" ID="TabContainer1"
runat="server" ActiveTabIndex="0"
Width="90%" OnInit="counter">
<asp:TabPanel ID="All_SafetySuggestions_Tab" HeaderText="All" runat="server">
<ContentTemplate>
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<asp:ListView ID="ListView1" runat="server" DataKeyNames="ID" DataSourceID="SqlDataSource1">
<LayoutTemplate>
<div ><table id="thetable" width="97%" cellpadding="0px" cellspacing="0px" style="margin:0px 0px 0px 0px; border:2px solid #003366; font-size:13px; font-weight:bold;">
<thead>
<tr style="background-color:#C6D7B5;">
<%--<th style="border-right:2px solid white;border-bottom:2px solid #003366; ">LL No.</th>--%>
<th style="border-bottom:2px solid #003366; ">
<asp:CheckBox ID="CheckBox1" runat="server" CssClass="chkBoxPosition" OnCheckedChanged="CheckBoxHeader_All" AutoPostBack="true" />
</th>
<th style="border-bottom:2px solid #003366; ">Title</th>
<th style="border-bottom:2px solid #003366; ">Description</th>
<th style="border-bottom:2px solid #003366; ">Type</th>
<th style="border-bottom:2px solid #003366; ">Username</th>
<th style="border-bottom:2px solid #003366; ">Name</th>
<th style="border-bottom:2px solid #003366; ">Division</th>
<th style="border-bottom:2px solid #003366; ">Submitted Date</th>
<th style="border-bottom:2px solid #003366; ">Status</th>
</tr>
</thead>
<tbody><tr id="itemPlaceholder" runat="server"></tr></tbody>
</table></div>
</LayoutTemplate>
<ItemTemplate>
<tr>
<td>
<asp:CheckBox ID="CheckBox2" runat="server" />
</td>
<td>
<asp:Label runat="server" ID="lblTitle" Text='<%#Eval("Title") %>'></asp:Label>
</td>
<td>
<asp:Label runat="server" ID="lblDescription" Text='<%#Eval("Description")%>'></asp:Label>
</td>
<td>
<asp:Label runat="server" ID="lblType" Text='<%#Eval("Type")%>'></asp:Label>
</td>
<td>
<asp:Label runat="server" ID="lblUsername" Text='<%#Eval("Username") %>'></asp:Label>
</td>
<td>
<asp:Label runat="server" ID="lblName" Text='<%#Eval("Name") %>'></asp:Label>
</td>
<td>
<asp:Label runat="server" ID="lblDivision" Text='<%#Eval("DivisionShortcut") %>'></asp:Label>
</td>
<td>
<asp:Label runat="server" ID="lblSubmittedDate" Text='<%#Eval("DateSubmitted")%>'></asp:Label>
</td>
<td>
<asp:LinkButton runat="server" ID="lnkSuggestionStatus" Text='<%#Eval("Status")%>'
OnClick="lnkSuggestionStatus_Click">
</asp:LinkButton>
</td>
</tr>
</ItemTemplate>
</asp:ListView>
...
</asp:TabPanel>
</asp:TabContainer>
<asp:Label ID="Label1" runat="server" Text="Lessons as Table"></asp:Label>
<asp:ImageButton ID="wordBtn" runat="server" ImageUrl="images/Icons/MS_Word_Icon.png" Width="30px" Height="30px" OnClick="creat_word_table"></asp:ImageButton>
代码隐藏：
public void counter(object sender, EventArgs e)
{
SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["testConnectionString"].ConnectionString);
string[] commands = {
"SELECT COUNT(*) FROM SafetySuggestionsLog"
};
int[] SSCount = new int[commands.Length];
try
{
for (int i = 0; i < commands.Length; i++)
{
SqlCommand cmd = new SqlCommand(commands[i], conn);
conn.Open();
SSCount[i] = (int)cmd.ExecuteScalar();
conn.Close();
}
All_SafetySuggestions_Tab.HeaderText += " (" + SSCount[0] + ")";
}
catch (Exception ex) { string ee = ex.Message; }
}
public void creat_word_table(object sender, EventArgs e)
{
ListView lv = new ListView();
if (TabContainer1.ActiveTab.HeaderText == "Last Three Months") { lv = Last_Three_Months_ListView; }
else if (TabContainer1.ActiveTab.HeaderText == "All") { lv = ListView1; }
//lv.Items.Clear();
HttpContext.Current.Response.Clear();
HttpContext.Current.Response.Charset = "";
HttpContext.Current.Response.ContentType = "application/msword";
string tab_name = TabContainer1.ActiveTab.HeaderText;
string strFileName = tab_name + ".doc";
HttpContext.Current.Response.AddHeader("Content-Disposition", "inline;filename=" + strFileName);
StringBuilder strHTMLContent = new StringBuilder();
strHTMLContent.Append(" <h1 title='Heading' align='Center' style='font-family:verdana;font-size:80%;color:black'><u>" + tab_name + "</u> </h1>".ToString());
strHTMLContent.Append("<br>".ToString());
strHTMLContent.Append("<table cellspacing='0' width='100%' style='border:2px solid #003366; font-size:17px; font-weight:bold;'>".ToString());
strHTMLContent.Append("<tr>".ToString());
strHTMLContent.Append("<th style='border-bottom:2px solid #003366; '>Title</th>".ToString());
strHTMLContent.Append("<th style='border-bottom:2px solid #003366; '>Description</th>".ToString());
strHTMLContent.Append("<th style='border-bottom:2px solid #003366; '>Type</th>".ToString());
strHTMLContent.Append("<th style='border-bottom:2px solid #003366; '>Username</th>".ToString());
strHTMLContent.Append("<th style='border-bottom:2px solid #003366; '>Name</th>".ToString());
strHTMLContent.Append("<th style='border-bottom:2px solid #003366; '>Division</th>".ToString());
strHTMLContent.Append("<th style='border-bottom:2px solid #003366; '>Submitted Date</th>".ToString());
strHTMLContent.Append("</tr>".ToString());
for (int i = 0; i < lv.Items.Count; i++)
{
CheckBox chk = lv.Items[i].FindControl("CheckBox2") as CheckBox;
if (chk.Checked)
{
strHTMLContent.Append("<tr>".ToString());
strHTMLContent.Append("<td style='border:1px solid #003366;width: 100px'>" + ((Label)lv.Items[i].FindControl("lblTitle")).Text + "</td>".ToString());
strHTMLContent.Append("<td style='border:1px solid #003366;width: 100px'>" + ((Label)lv.Items[i].FindControl("lblDescription")).Text + "</td>".ToString());
strHTMLContent.Append("<td style='border:1px solid #003366;width: 100px'>" + ((Label)lv.Items[i].FindControl("lblType")).Text + "</td>".ToString());
strHTMLContent.Append("<td style='border:1px solid #003366;width: 100px'>" + ((Label)lv.Items[i].FindControl("lblUsername")).Text + "</td>".ToString());
strHTMLContent.Append("<td style='border:1px solid #003366;width: 100px'>" + ((Label)lv.Items[i].FindControl("lblName")).Text + "</td>".ToString());
strHTMLContent.Append("<td style='border:1px solid #003366;width: 100px'>" + ((Label)lv.Items[i].FindControl("lblDivision")).Text + "</td>".ToString());
strHTMLContent.Append("<td style='border:1px solid #003366;width: 100px'>" + ((Label)lv.Items[i].FindControl("lblSubmittedDate")).Text + "</td>".ToString());
strHTMLContent.Append("</tr>".ToString());
}
}
strHTMLContent.Append("</table>".ToString());
strHTMLContent.Append("<br><br>".ToString());
HttpContext.Current.Response.Write(strHTMLContent);
HttpContext.Current.Response.End();
HttpContext.Current.Response.Flush();
}