C＃，usercontrol：如何检索在usercontrol.ascx中使用的主键？ [英] C#, usercontrol : how can I retrieve the primary key to use in a usercontrol.ascx?
问题描述
您好！我有一个GridView，其中包含来自mysql数据库的数据绑定字段。它包含两列IdTask（主键），
TaskName和一个用于打开jQuery对话框的按钮。
我需要根据有关的ID填写此对话框我点击按钮的行中的任务。
我有一个用户控件和另一个Gridview，其中包含我需要在对话框中显示的数据。
这就是我的意思到目前为止：
aspx页面：
Hello! I have a GridView with data bound fields from a mysql database. It contains two columns IdTask(primary key),
TaskName and one button which opens a jQuery dialog.
I need to fill this dialog based on the on the ID of the task from the row i clicked the button.
And i have a user control with another Gridview which contains said data that i need to display in the dialog.
This is what i have so far:
The aspx Page:
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<%@ Register TagPrefix="ucFiles" TagName="Files" Src="~/UserControlFiles.ascx"
the script:
<script>
$(document).ready(function () {
$(".btnFiles").click(function () {
$("#divModalFiles").dialog({
dialogClass: "no-close",
modal: true,
title: "Files",
width: 450,
height: 440,
buttons: {
Close: function () {
$(this).dialog('close');
}
},
open: function (type, data) {
$(this).parent().appendTo("form");
}
});
return false;
});
});
</script>
<form id="form1" runat="server" style="padding: 10px; width: 550px">
<asp:GridView DataKeyNames="IdTask" ID="gvTask" runat="server"
AutoGenerateColumns="false">
<Columns>
<asp:BoundField DataField="IdTask" HeaderText="ID" />
<asp:BoundField DataField="Name" HeaderText="Task" />
<asp:TemplateField>
<ItemTemplate>
<asp:ImageButton ID="btnFile" CssClass="btnFiles" runat="server" ImageUrl="img/files.png.png"/>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
<div id="divModalFiles" style="display:none">
<ucFiles:Files runat="server"/>
</div>
</form>
</body>
ascx userControl：
The ascx userControl:
<div id="file">
<asp:Literal ID="litMesaj" runat="server" Visible="false"></asp:Literal>
<asp:FileUpload ID="fUpload" runat="server" />
<br />
<br />
<asp:Label ID="lblDescFile" runat="server" Text="Description"></asp:Label>
<asp:TextBox ID="txtDescFile" runat="server" ></asp:TextBox>
<asp:Button ID="btnUpload" runat="server" Text="Upload" OnClick="btnUpload_Click" />
<br />
<br />
<asp:GridView ID="gvFiles" DataKeyNames="IdFiles" runat="server" AutoGenerateColumns="false" EmptyDataText="No files uploaded">
<Columns>
<asp:BoundField DataField="IdFiles" HeaderText="ID" />
<asp:BoundField DataField="IdTask" HeaderText="IdTask" />
<asp:BoundField DataField="Name" HeaderText="File Name" />
<asp:BoundField DataField="Description" HeaderText="Description" />
<asp:TemplateField>
<ItemTemplate>
<asp:LinkButton ID="lnkDownload" runat="server" Text="Download File" OnClick="lnkDownload_Click" CommandArgument='<%# Eval("Url") %>'></asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<ItemTemplate>
<asp:ImageButton runat="server" ID="btnDelFile" ImageUrl="~/delete.png.png" OnClientClick="return confirm('Sure?');" OnClick="btnDelFile_Click"/>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
</div>
ascx.cs userControl：
The ascx.cs userControl:
// the function i call in page load to display the files
private void loadFiles()
{
string sqlFiles = "select * from files where IdTask=" + ?? ;// here is where i need the help how can i retrieve the IdTask from the gridview on the aspx Page?
MySqlCommand cmd = new MySqlCommand(sqlFiles, conn);
MySqlDataAdapter adp = new MySqlDataAdapter(cmd);
DataTable dtFiles = new DataTable();
adp.Fill(dtFiles);
gvFiles.DataSource = dtFiles;
gvFiles.DataBind();
}
你能帮助我吗？如果没有该ID，我也无法使用下载或上传文件功能。它目前只显示上传文件和上传按钮的表格
如果我没有说清楚（英语不是我的第一语言）我需要的东西请随时提出任何问题和问题我会解释:)
编辑：
我还想在数据库中添加我有2个表：
1. IdTask，任务
2. IdFile，IdTask，FileName等。
所以每个任务都有一个相应的文件
我尝试过：
观看各种教程但仍然没有解决方案
Can you help me ? without that ID i can't use the download or the upload files functions either. It currently shows only the form with the files upload and the upload button
If i didn't made myself clear(English is not my first language) with what i need please feel free to ask any questions and i will explain :)
I also want to add that in the database i have 2 tables:
1. IdTask, Task
2. IdFile, IdTask, FileName, etc..
so each task has a coresponding file
What I have tried:
watching all sorts of tutorials and still don't have a solution
推荐答案
（文档）。 ready（function（）{
(document).ready(function () {
（。btnFiles）。click（function（）{
(".btnFiles").click(function () {
（＃divModalFiles）。dialog（ {
dialogClass：no-close，
modal：true，
title：Files，
width：450，
身高：440，
按钮：{
关闭：function（）{
("#divModalFiles").dialog({ dialogClass: "no-close", modal: true, title: "Files", width: 450, height: 440, buttons: { Close: function () {
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