Asp.net ImageResizer-进程无法访问该文件,因为其他进程正在使用该文件
此行抛出错误:Asp.net ImageResizer-进程无法访问该文件,因为其他进程正在使用该文件,asp.net,imageresizer,Asp.net,Imageresizer,此行抛出错误:ImageBuilder.Current.Build(imgURL、imgURL、resizeImg) 知道为什么吗 public void setImgSize(string controlId, string filename) { decimal currentWidth = 0; decimal currentHeight = 0; int maxFileWidth = 600; int maxFileHeight = 600; bo
ImageBuilder.Current.Build(imgURL、imgURL、resizeImg)代码>
知道为什么吗
public void setImgSize(string controlId, string filename)
{
decimal currentWidth = 0;
decimal currentHeight = 0;
int maxFileWidth = 600;
int maxFileHeight = 600;
bool imageExists = false;
string imgURL = "~/SODocs/" + SONum + "/" + filename;
string imgPath = Server.MapPath(imgURL);
if (File.Exists(imgPath))
{
imageExists = true;
System.Drawing.Image imgFile = System.Drawing.Image.FromFile(imgPath);
Image imgControl = FindControl(controlId) as Image;
int maxDisplayWidth = 273;
int maxDisplayHeight = 200;
currentWidth = Convert.ToDecimal(imgFile.Width);
currentHeight = Convert.ToDecimal(imgFile.Height);
int newDisplayWidth = 0;
int newDisplayHeight = 0;
int paddingHeight = 0;
if (currentHeight > currentWidth)
{
imgControl.Height = maxDisplayHeight;
newDisplayWidth = Convert.ToInt32((maxDisplayHeight / currentHeight) * currentWidth);
imgControl.Width = newDisplayWidth;
imgControl.Style.Add("margin", "0 auto");
}
else if (currentWidth > currentHeight)
{
newDisplayHeight = Convert.ToInt32((maxDisplayWidth / currentWidth) * currentHeight);
if (newDisplayHeight > maxDisplayHeight)
{
// set newWidth based on maxHeight
newDisplayWidth = Convert.ToInt32((maxDisplayHeight / currentHeight) * currentWidth);
imgControl.Width = newDisplayWidth;
imgControl.Style.Add("margin", "0 auto");
}
else
{
imgControl.Width = maxDisplayWidth;
}
paddingHeight = maxDisplayHeight - newDisplayHeight;
imgControl.Style.Add("padding-top", paddingHeight.ToString() + "px");
}
imgControl.ImageUrl = imgURL;
imgFile.Dispose();
imgFile = null;
if (imageExists)
{
// resize the image file
if (currentWidth > maxFileWidth | currentHeight > maxFileHeight)
{
var resizeImg = new ResizeSettings();
resizeImg.MaxWidth = maxFileWidth;
resizeImg.MaxHeight = maxFileHeight;
ImageBuilder.Current.Build(imgURL, imgURL, resizeImg);
}
}
}
}
您正在打开该文件以便自己单独读取,但希望ImageResizer稍后能够写入该文件。System.Drawing无法正确处理文件锁定,并且.Dispose()不足以处理内存泄漏或遇到的文件访问问题。
我建议复习一下ImageResizer的用法
您在这里试图实现的目标很可能是可以实现的。也许是一个愚蠢的问题,但您是否在Photoshop或类似的软件中打开了图像?我也知道,当我将文件ftp到服务器时,上传“挂起”Hmmm时会出现这种错误。。。好像是这样的。不过,我并没有把它明目张胆地打开。也许背景中有什么东西抓住了它。