请告诉我InputFile.PostedFile.ContentLength测量的单位。我需要确保文件小于500k。
感谢。
答案 0 :(得分:11)
测量单位=字节。
1 Kilobyte (kB) = 2ˆ10 Byte = 1024 Bytes
文件大小为15 KB的示例代码测试:
const int maxFileLength = 15360; // 15KB = 1024 * 15
if(PictureFile.PostedFile.ContentLength > maxFileLength)
{
MyResult.Text = String.Format("Your post has a size of {0:#,##0} bytes which
exceeded the limit of {0:#,##0} bytes. Please upload a smaller file.",
PictureFile.ContentLength, maxFileLength);
}
else
{
// Save the file here
MyResult.Text = "Thank you for posting."
}
在您的情况下,您希望文件小于500 KB,您应该这样:
const int maxFileLength = 512000; // 500KB = 500 * 1024
答案 1 :(得分:2)
这是字节。
http://msdn.microsoft.com/en-us/library/system.web.httppostedfile.contentlength.aspx
<强> HttpPostedFile.ContentLength 强>
获取上传文件的大小(以字节为单位)。
答案 2 :(得分:-1)
当我上传一个超过1 mb的模板文件时,它的geting加载了很长时间。我的代码如下----
if (checkImagecount())
{
//string imgFolder = Server.MapPath("/Userimages/" + emp_id.ToString().Trim() + "/Images/Browseimage/");
string destinationImage = Server.MapPath("/master/" + emp_id.ToString().Trim() + "/Images/");
string destination1 = Server.MapPath("/master/" + emp_id.ToString().Trim() + "/Images/");
string imgFilename, fileExt = String.Empty;
Response.Write(fileTemplateimage.PostedFile.ContentLength+"<br/>");
Response.Write(fileTemplateimage.FileBytes.Length);
Response.End();
if (fileTemplateimage.PostedFile.ContentLength > 0 && fileTemplateimage.FileBytes.Length <= 1048576)
{
System.Drawing.Image uploadImage = System.Drawing.Image.FromStream(fileTemplateimage.PostedFile.InputStream);
float uploadImagewidth = uploadImage.PhysicalDimension.Width;
float uploadImageheight = uploadImage.PhysicalDimension.Height;
else
{
Page.ClientScript.RegisterStartupScript(this.GetType(), "failure", "alert('अपलोड फ़ाइल आकार 1 एमबी से अधिक नहीं होना चाहिए.');", true);
divhide.Style.Add("display", "block");
divUploadpanel.Style.Add("display", "block");
fileTemplateimage.Focus();