[代码]C#上传文件代码

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注意一定要加runat=“Server”,否则无法执行服务器端代码
页面代码:

<form id="form1" runat="server">
<input id="uploadfile" type="file" size="9" runat="server" />
<asp:Button ID="Button1" runat="server" Text="Button" onclick="Button1_Click" />
<asp:Label ID="Label1" runat="server" Text="Label">文件:</asp:Label>
</form>

Button1_Click代码:

protected void Button1_Click(object sender, EventArgs e)
{
DateTime now = System.DateTime.Now;
string strBaseLocation = "d:\\up\\";
string filename = now.DayOfYear.ToString() + uploadfile.PostedFile.ContentLength.ToString() + uploadfile.PostedFile.FileName;
//上传文件名
uploadfile.PostedFile.SaveAs(strBaseLocation+filename);
Label1.Text = "上传成功,文件名为:" + filename;
}
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