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;
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);
}
}
}
}