private void ProcessingNodes(XmlNode node, ref Dictionary <id, MetadataAttributes> metadataXml, MetadataAttributes attributes)
{
foreach (XmlNode child in node)
{
attributes = new MetadataAttributes();
string metadataKey = string.Empty;
XmlAttributeCollection attrList = child.Attributes;
foreach (XmlAttribute attr in attrList)
{
if (attr.Name == "id")
{
metadataKey = attr.Value;
}
else
{
attributes.Add(new MetadataAttribute(attr.Name, attr.Value));
}
}
if (metadataKey != string.Empty)
{
metadataXml.Add(metadataKey, attributes);
}
}
}
protected override void OnDataBinding(EventArgs e)
{
base.OnDataBinding(e);
//check if field has a value
if (FieldValue == null)
{
return;
}
// get the file extension
String extension = FieldValueString.Substring(
FieldValueString.LastIndexOf(".") + 1,
FieldValueString.Length - (FieldValueString.LastIndexOf(".") + 1));
// get attributes
var fileUploadAttributes = MetadataAttributes.OfType <FileUploadAttribute>().FirstOrDefault();
String fileUrl = fileUploadAttributes.FileUrl;
String displayImageUrl = fileUploadAttributes.DisplayImageUrl;
String displayImageType = fileUploadAttributes.DisplayImageType;
// check the file exists else throw validation error
String filePath;
if (fileUploadAttributes != null)
{
filePath = String.Format(fileUrl, FieldValueString);
}
else
{
// if attribute not set use default
filePath = String.Format("~/files/{0}", FieldValueString);
}
// show the relavent control depending on metadata
if (fileUploadAttributes.HyperlinkRoles != null)
{
// if there are roles then check:
// if user is in one of the roles supplied
// or if the hyperlinks are disabled
// or if the file does not exist
// then hide the link
if (!fileUploadAttributes.HasRole(Roles.GetRolesForUser()) || fileUploadAttributes.DisableHyperlink || !File.Exists(Server.MapPath(filePath)))
{
Label1.Text = FieldValueString;
HyperLink1.Visible = false;
}
else
{
Label1.Visible = false;
HyperLink1.Text = FieldValueString;
HyperLink1.NavigateUrl = filePath;
}
}
else
{
// if either hyperlinks are disabled or the
// file does not exist then hide the link
if (fileUploadAttributes.DisableHyperlink || !File.Exists(Server.MapPath(filePath)))
{
Label1.Text = FieldValueString;
HyperLink1.Visible = false;
}
else
{
Label1.Visible = false;
HyperLink1.Text = FieldValueString;
HyperLink1.NavigateUrl = filePath;
}
}
// check file exists on file system
if (!File.Exists(Server.MapPath(filePath)))
{
CustomValidator1.ErrorMessage = String.Format("{0} does not exist", FieldValueString);
CustomValidator1.IsValid = false;
}
// show the icon
if (!String.IsNullOrEmpty(extension))
{
// set the file type image
if (!String.IsNullOrEmpty(displayImageUrl))
{
Image1.ImageUrl = String.Format(displayImageUrl, extension + "." + displayImageType);
}
else
{
// if attribute not set the use default
Image1.ImageUrl = String.Format("~/images/{0}", extension + "." + displayImageType);
}
Image1.AlternateText = extension + " file";
// if you apply dimentions from DD Futures
var imageFormat = MetadataAttributes.OfType <ImageFormatAttribute>().FirstOrDefault();
if (imageFormat != null)
{
// if either of the dims is 0 don't set it
// this will mean that the aspect will remain locked
if (imageFormat.DisplayWidth != 0)
{
Image1.Width = imageFormat.DisplayWidth;
}
if (imageFormat.DisplayHeight != 0)
{
Image1.Height = imageFormat.DisplayHeight;
}
}
}
else
{
// if file has no extension then hide image
Image1.Visible = false;
}
}
protected override void OnDataBinding(EventArgs e)
{
base.OnDataBinding(e);
if (!IsPostBack)
{
HasImage = FieldValue != null;
}
//get metadata
int width = 100;
int height = 100;
bool displayinedit = true;
var metadata = MetadataAttributes.OfType <ImageFormatAttribute>().FirstOrDefault();
if (metadata != null)
{
width = metadata.DisplayWidth;
height = metadata.DisplayHeight;
displayinedit = metadata.DisplayInEdit;
}
//Build and store cache key
StringBuilder sb = new StringBuilder();
for (int i = 0; i < Column.Table.PrimaryKeyColumns.Count; i++)
{
if (sb.Length > 0)
{
sb.Append(',');
}
sb.Append(DataBinder.GetPropertyValue(Row, Column.Table.PrimaryKeyColumns[i].Name));
}
string cachekey = string.Format(
"{0}:{1}:{2}",
Column.Table.Name,
Column.Name,
sb.ToString()
);
ViewState["CacheKey"] = cachekey;
//display picture if in edit mode,
if (Mode == DataBoundControlMode.Edit && displayinedit)
{
//set image properties
PlaceHolderImage.Visible = true;
sb = new StringBuilder();
sb.AppendFormat(
"~/ImageHandler.axd?table={0}&column={1}&width={2}&height={3}",
HttpUtility.UrlEncode(Column.Table.Name),
HttpUtility.UrlEncode(Column.Name),
width,
height
);
for (int i = 0; i < Column.Table.PrimaryKeyColumns.Count; i++)
{
sb.AppendFormat("&pk{0}={1}", i, DataBinder.GetPropertyValue(Row, Column.Table.PrimaryKeyColumns[i].Name));
}
ImageEdit.ImageUrl = sb.ToString();
}
}
protected override void ExtractValues(IOrderedDictionary dictionary)
{
// get attributes
var fileUploadAttributes = MetadataAttributes.OfType <FileUploadAttribute>().FirstOrDefault();
String fileUrl;
String[] extensions;
if (fileUploadAttributes != null)
{
fileUrl = fileUploadAttributes.FileUrl;
extensions = fileUploadAttributes.FileTypes;
if (FileUpload1.HasFile)
{
// get the files folder
String filesDir = fileUrl.Substring(0, fileUrl.LastIndexOf("/") + 1);
// resolve full path c:\... etc
String path = Server.MapPath(filesDir);
// get files extension without the dot
String fileExtension = FileUpload1.FileName.Substring(
FileUpload1.FileName.LastIndexOf(".") + 1).ToLower();
// Get the name of the file to upload.
string fileName = FileUpload1.FileName;
// Create the path and file name to check for duplicates.
string pathToCheck = path + "\\" + FileUpload1.FileName;
// Create a temporary file name to use for checking duplicates.
string tempfileName = "";
// Check to see if a file already exists with the
// same name as the file to upload.
if (System.IO.File.Exists(pathToCheck))
{
int counter = 2;
while (System.IO.File.Exists(pathToCheck))
{
// if a file with this name already exists,
// prefix the filename with a number.
tempfileName = "Copy_No_" + counter.ToString() + "_of_" + FileUpload1.FileName;
pathToCheck = path + "\\" + tempfileName;
counter++;
}
fileName = tempfileName;
}
// try to upload the file showing error if it fails
try
{
FileUpload1.PostedFile.SaveAs(path + "\\" + fileName);
dictionary[Column.Name] = fileName;
}
catch (Exception ex)
{
CustomValidator1.IsValid = false;
CustomValidator1.ErrorMessage = ex.Message;
}
}
}
}
