我使用以下代码从服务器下载文件,这些文件在开发和QA服务器中都可以正常运行,但是当它进入生产时出现了错误。错误是 System.IO.DirectoryNotFoundException路径的一部分不正确
使用的代码:
protected void lnkDownload_Click(object sender, eventArgs e)
{
LinkButton lnkbtn = sender as LinkButton;
GridViewRow gvrow = lnkbtn.NamingContainer as GridViewRow;
string filePath = ((HtmlInputHidden)gvFilesDetails.Rows[gvrow.RowIndex].FindControl("hdnFileLocation")).Value.ToString();
Response.AddHeader("Content-Disposition", "attachment;filename=\"" + filePath + "\"");
Response.TransmitFile(Server.MapPath("~/" + filePath));
Response.End();
}
调试问题似乎很奇怪,因为它只发生在生产服务器中。 请帮帮我。
答案 0 :(得分:0)
Server.MapPath将获取与虚拟路径对应的物理路径。请交叉检查您的应用程序服务器(生产)。
这是我在制作中使用的代码,对我有用,你可以看一下。
protected void imgDownload_click(object sender, ImageClickEventArgs e)
{
ImageButton imgbtn = (ImageButton)sender;
GridViewRow row = (GridViewRow)imgbtn.NamingContainer;
string strHFFileDetails =((HiddenField )row.FindControl("HFFileID")) .Value.ToString();
string[] strFileDetails = strHFFileDetails.Split('?');
string FilePath = strFileDetails[1].ToString();
string filename = gvFiles.Rows[row.RowIndex].Cells[0].Text.ToString();
string path = @FilePath;
System.IO.FileInfo file = new System.IO.FileInfo(path);
if (file.Exists)
{
Response.Clear();
Response.AppendHeader("Content-Disposition:", "attachment; filename=" + file.Name);
Response.AppendHeader("Content-Length", file.Length.ToString());
Response.ContentType = "application/octet-stream";
Response.TransmitFile(file.FullName);
Response.End();
}
}
答案 1 :(得分:0)
@Tapas Mahata尝试这个,
在web.config中定义您的网址,
<appSettings>
<add key="FileURL" value="http:\\www.WebSiteName.com\"/>
<appSettings>
在aspx.cs中,
protected void lnkDownload_Click(object sender, eventArgs e)
{
LinkButton lnkbtn = sender as LinkButton;
GridViewRow gvrow = lnkbtn.NamingContainer as GridViewRow;
string filePath = ((HtmlInputHidden)gvFilesDetails.Rows[gvrow.RowIndex].FindControl("hdnFileLocation")).Value.ToString();
string fileURL = ConfigurationManager.AppSettings["FileURL"].ToString();
Response.AddHeader("Content-Disposition", "attachment;filename=\"" + filePath + "\"");
Response.TransmitFile(fileURL+filePath);
Response.End();
}
答案 2 :(得分:0)
@Tapas Mahata也试试这个,
aspx页面:
<asp:GridView ID="gv" OnRowDataBound="gv_RowDataBound" AutoGenerateColumns="False" runat="server">
<Columns>
<asp:HyperLinkField Target="_blank" DataNavigateUrlFields="URL" DataTextField="URL" HeaderText="Document Path" />
</Columns>
</asp:GridView>
aspx.cs页面:
private string docPath = "";
protected void Page_Load(object sender, EventArgs e)
{
docPath = ResolveClientUrl("~/Uploads/");
}
protected void gv_RowDataBound(object sender, GridViewRowEventArgs e)
{
HyperLink FileHyperlink = null;
if (e.Row.RowType == DataControlRowType.DataRow)
{
FileHyperlink = (HyperLink)e.Row.Cells[0].Controls[0];
string fileName = FileHyperlink.Text.Replace("'", "''");
FileHyperlink.NavigateUrl = docPath + fileName;
}
}