下载文件(图像按钮)选项不工作的UpdatePanel? [英] download file (Image Button ) option is not working in UpdatePanel?
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问题描述
在GridView中有一个形象按钮来下载文件。我用与updatepanel.If我删除的UpdatePanel的GridView控件的下载选项将工作fine.But我必须使用的UpdatePanel在this.How可以Isolve呢?
< ASP:的UpdatePanel ID =UpdatePanel2=服务器>
<&的ContentTemplate GT;
< ASP:GridView控件ID =GridImport=服务器的AutoGenerateColumns =假WIDTH =99%HEIGHT =50%
AllowPaging =真正的网格线=无样式=填充:15px的;文本对齐:左;溢出:滚动;
FONT-FAMILY:宋体;字体大小:11磅;ShowHeaderWhenEmpty =真每页=5
的CssClass =Grid_LEHeaderStyle-的CssClass =Grid_HeadEmptyDataText =没有文件导入OnPageIndexChanging =GridImport_PageIndexChanging>
<柱体和GT;
< ASP:BoundField的数据字段=文本的HeaderText =文件名/>
< ASP:的TemplateField>
<&ItemTemplate中GT;
< ASP:ImageButton的ID =lnkDownload=服务器CommandArgument ='<%#的eval(值)%GT;'风格=宽度:20像素,高度:20像素;的ImageUrl =〜/图片/ download.png的OnClick =DownloadFile/> <% - 的CommandName =上传的OnClick =DownloadFile - %GT;
< / ItemTemplate中>
< / ASP:的TemplateField>
< ASP:的TemplateField>
<&ItemTemplate中GT;
< ASP:ImageButton的ID =lnkDelete=服务器CommandArgument ='<%#的eval(值)%GT;'风格=宽度:20像素,高度:20像素;的ImageUrl =〜/图片/ cancel.png的OnClick =的DeleteFile/>
< / ItemTemplate中>
< / ASP:的TemplateField>
< /专栏>
< / ASP:GridView的>
< /&的ContentTemplate GT;
< / ASP:的UpdatePanel>
的.cs
保护无效DownloadFile(对象发件人,EventArgs的发送)
{
字符串文件路径=(发件人为的ImageButton).CommandArgument;
Response.ContentType = ContentType的;
Response.AppendHeader(内容处置,附件;文件名=+ Path.GetFileName(文件路径));
Response.WriteFile(文件路径);
到Response.End();
}
保护无效的DeleteFile(对象发件人,EventArgs的发送)
{
字符串文件路径=(发件人为的ImageButton).CommandArgument;
File.Delete(文件路径);
ExprotFileList();
ClientScript.RegisterStartupScript(的GetType(),瓦尔,ShowExpPopup();,真);
}
解决方案
在您的code文件:
保护无效ClickFromUpdate_Click(对象发件人,EventArgs的发送)
{
字符串文件路径=(发件人为的ImageButton).CommandArgument;
ScriptManager.RegisterStartupScript(此,this.GetType(),DownloadScript,$(功能(){DownloadFile(+文件路径+);});,真);
}保护无效DownloadFile_Click(对象发件人,EventArgs的发送)
{
//您的下载code
VAR文件路径=的Request.Form [__ EVENTARGUMENT];
Response.ContentType = ContentType的;
Response.AppendHeader(内容处置,附件;文件名=+ Path.GetFileName(文件路径));
Response.WriteFile(文件路径);
到Response.End();
}
在UpdatePanel内的标记文件:
< ASP:的TemplateField>
<&ItemTemplate中GT;
< ASP:ImageButton的ID =lnkDownload=服务器CommandArgument ='<%#的eval(值)%GT;'风格=宽度:20像素,高度:20像素;的ImageUrl =〜/图片/ download.png的OnClick =ClickFromUpdate_Click/>
< / ItemTemplate中>
< / ASP:的TemplateField>
在您的标记文件添加外的UpdatePanel这个按钮:
< ASP:按钮的ID =ButtonDownload的OnClick =DownloadFile_Click=服务器/>
的Javascript code:
函数DownloadFile(文件路径){
__doPostBack(&下;%= ButtonDownload.UniqueID%gt;中,文件路径);
}
In gridview There is an image button to download file. I have used the gridview with updatepanel.If I removed Updatepanel the download option will work fine.But i have to use Updatepanel in this.How can Isolve this?
<asp:UpdatePanel ID="UpdatePanel2" runat="server" >
<ContentTemplate>
<asp:GridView ID="GridImport" runat="server" AutoGenerateColumns="false" Width="99%" Height="50%"
AllowPaging="true" GridLines="None" Style="padding: 15px; text-align: left; overflow: scroll;
font-family: Arial; font-size: 11pt;" ShowHeaderWhenEmpty="true" PageSize="5"
CssClass="Grid_LE" HeaderStyle-CssClass="Grid_Head" EmptyDataText = "No files Imported" OnPageIndexChanging="GridImport_PageIndexChanging">
<Columns>
<asp:BoundField DataField="Text" HeaderText="File Name" />
<asp:TemplateField>
<ItemTemplate>
<asp:ImageButton ID="lnkDownload" runat="server" CommandArgument='<%# Eval("Value") %>' Style="width: 20px; height: 20px;" ImageUrl="~/Images/download.png" OnClick = "DownloadFile" /> <%--CommandName="Upload" OnClick="DownloadFile"--%>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<ItemTemplate>
<asp:ImageButton ID="lnkDelete" runat="server" CommandArgument='<%# Eval("Value") %>' Style="width: 20px; height: 20px;" ImageUrl="~/Images/cancel.png" OnClick="DeleteFile" />
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
</ContentTemplate>
</asp:UpdatePanel>
.cs
protected void DownloadFile(object sender, EventArgs e)
{
string filePath = (sender as ImageButton).CommandArgument;
Response.ContentType = ContentType;
Response.AppendHeader("Content-Disposition", "attachment; filename=" + Path.GetFileName(filePath));
Response.WriteFile(filePath);
Response.End();
}
protected void DeleteFile(object sender, EventArgs e)
{
string filePath = (sender as ImageButton).CommandArgument;
File.Delete(filePath);
ExprotFileList();
ClientScript.RegisterStartupScript(GetType(), "Val", "ShowExpPopup();", true);
}
解决方案
In your code file:
protected void ClickFromUpdate_Click(object sender, EventArgs e)
{
string filePath = (sender as ImageButton).CommandArgument;
ScriptManager.RegisterStartupScript(this, this.GetType(), "DownloadScript", "$(function() {DownloadFile(" + filePath + ");});", true);
}
protected void DownloadFile_Click(object sender, EventArgs e)
{
//Your download code
var filePath = Request.Form["__EVENTARGUMENT"];
Response.ContentType = ContentType;
Response.AppendHeader("Content-Disposition", "attachment; filename=" + Path.GetFileName(filePath));
Response.WriteFile(filePath);
Response.End();
}
In your markup file inside the updatepanel:
<asp:TemplateField>
<ItemTemplate>
<asp:ImageButton ID="lnkDownload" runat="server" CommandArgument='<%# Eval("Value") %>' Style="width: 20px; height: 20px;" ImageUrl="~/Images/download.png" OnClick = "ClickFromUpdate_Click" />
</ItemTemplate>
</asp:TemplateField>
In your markup file add this button outside your updatepanel:
<asp:Button ID="ButtonDownload" OnClick="DownloadFile_Click" runat="server" />
Javascript code:
function DownloadFile(filepath) {
__doPostBack("<%= ButtonDownload.UniqueID %>", filepath);
}
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