Hallo!
I am writing a Web Application in C#.
I use dsofile.dll to get the Custom Properties of Office Documents. Tha functions very well. But when i reload my page I get an Error message.
Here is my Code:
[CODE]
protected System.Web.UI.WebControls.Table myTable;
protected DSOleFile.CustomProperties custProps;
protected DSOleFile.PropertyReader objPropReader;
protected DSOleFile.DocumentProperties objDocumentProps;
private void Page_Load(object sender, System.EventArgs e)
{
try
{
string strDirectory = @"c:\temp";
objPropReader = new DSOleFile.PropertyReaderClass();
ArrayList arrListDocumentFullName = new ArrayList();
ArrayList arrListDocumentName = new ArrayList();
DirectoryInfo di = new DirectoryInfo(strDirectory);
FileInfo[] rgFiles = di.GetFiles("*.doc");
foreach(FileInfo objFileInfo in rgFiles)
{
System.IO.FileAttributes objAttrFile = System.IO.File.GetAttributes(objFileInfo.FullName);
if ((objAttrFile & (System.IO.FileAttributes.Hidden | System.IO.FileAttributes.System)) != 0)
{
Response.Write(objFileInfo.Name + ": Hidden Datei
");
}
else
{
arrListDocumentFullName.Add(objFileInfo.FullName);
arrListDocumentName.Add(objFileInfo.Name);
}
}
int intPropCount = 0;
object[] objIndex;
string strSharePath = @"\\wlcomgtd\temp\";
string strFileName = "";
string strValue = "";
for(int i = 0; i < arrListDocumentFullName.Count; i++)
{
strFileName = arrListDocumentFullName[i].ToString();
objDocumentProps = objPropReader.GetDocumentProperties(strFileName);
System.Runtime.InteropServices.Marshal.ReleaseComObject(objPropReader);
objPropReader = null;
intPropCount = objDocumentProps.CustomProperties.Count;
objIndex = new object[intPropCount];
object obj = null;
TableRow row = new TableRow();
TableCell cellName = new TableCell();
cellName.Text = arrListDocumentName[i].ToString();
cellName.RowSpan = 2;
cellName.BackColor = Color.White;
row.Cells.Add(cellName);
for(int a = 1; a < intPropCount+1; a++)
{
obj = a;
objIndex[a-1] = objDocumentProps.CustomProperties[obj].Name;
TableCell cellPropName = new TableCell();
cellPropName.Text = objDocumentProps.CustomProperties[obj].Name;
row.Controls.Add(cellPropName);
}
row.BackColor = Color.LightGray;
myTable.Rows.Add(row);
TableRow row1 = new TableRow();
for(int y = 0; y < intPropCount; y++)
{
// strValue = "Nicht vorhanden";
custProps = objDocumentProps.CustomProperties;
strValue = objDocumentProps.CustomProperties[objIndex[y]].get_Value().ToString();
TableCell cell2 = new TableCell();
cell2.Text = strValue;
row1.Cells.Add(cell2);
}
myTable.Rows.Add(row1);
}
System.Runtime.InteropServices.Marshal.ReleaseComObject(objDocumentProps);
objDocumentProps = null;
GC.Collect();
GC.WaitForPendingFinalizers();
}
catch(System.Runtime.InteropServices.COMException ex)
{
Response.Write(ex.ToString());
}
}
[/CODE]
An this is the error Message which occurs when i wanna reload the page:
System.Runtime.InteropServices.COMException (0x80030020): A share violation has occured at DSOleFile.PropertyReaderClass.GetDocumentProperties(String sFileName) at Documentproperties.WebForm1.Page_Load(Object sender, EventArgs e) in c:\inetpub\wwwroot\documentproperties\webform1.aspx.cs:line 65
I found out that the Process aspnet_wp.exe is locking the Document. When I kill the process manually from the Task Manager I can open the document.
How can I implement that, after the Custom Properties have been read, the document is free again?
I hope you can help me.
Thanks, Gerald.