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我在互联网上搜索以使用更新面板中的上传文件。 我想避免页面刷新，当我点击文件上传。 所以我把我的代码在更新面板采用了触发 但还是爽快...更新面板中的文件上传仍在刷新
代码：
<asp:ScriptManager runat="server" ID="ScriptManager1" EnablePartialRendering="true"></asp:ScriptManager>
<asp:UpdatePanel runat="server" ID="UpdatePanel1" UpdateMode="Conditional" ChildrenAsTriggers="true">
<Triggers>
<asp:PostBackTrigger ControlID="imageUploadAction" />
</Triggers>
<ContentTemplate>
<div class="fileUpload btn btn-primary btn-block btn-lg">
<span>آپلود</span>
<asp:FileUpload CssClass="inputfile" runat="server" ID="imageUpload" />
</div>
<br />
<div class="alert alert-info" runat="server" id="imageAlert"></div>
<div style="border-bottom: 1px solid #ddd;"></div>
<br />
<asp:Button runat="server" ID="imageUploadAction" CssClass="btn btn-block btn-lg btn-success" Text="ارسال" OnClick="imageUploadAction_Click" />
</ContentTemplate>
</asp:UpdatePanel>
代码背后：
protected void imageUploadAction_Click(object sender, EventArgs e)
{
Debug.WriteLine("Uploading" + " " + imageUpload.HasFile);
Boolean fileOK = false;
String path = Server.MapPath("~/Assets/image/posts/");
if (imageUpload.HasFile)
{
String fileExtension = System.IO.Path.GetExtension(imageUpload.FileName).ToLower();
String[] allowedExtensions = { ".jpg", ".png" };
for (int i = 0; i < allowedExtensions.Length; i++)
if (fileExtension == allowedExtensions[i])
fileOK = true;
}
if (fileOK)
{
try
{
int last = getLastImage() + 1;
string link = path + last + ".jpg";
imageUpload.PostedFile.SaveAs(link);
db.insertPhoto(link);
imageAlert.InnerText = "فایل آپلود شده است ، کد عکس : " + last;
}
catch (Exception ex)
{
ExceptionUtility.LogExceptionNotFailure(ex);
Debug.WriteLine(ex.ToString());
imageAlert.InnerText = "فایل نمیتواند آپلود شود.";
}
}
else
{
imageAlert.InnerText = "فایل مجاز نیست";
}
}