/// <summary>
/// Sets a record stream field from a Stream object. Stream data cannot be inserted into temporary fields.
/// </summary>
/// <param name="field">Specifies the field of the Record to set.</param>
/// <param name="stream">Specifies the stream data.</param>
/// <exception cref="ArgumentOutOfRangeException">The field is less than 0 or greater than the
/// number of fields in the Record.</exception>
/// <remarks><p>
/// The stream persists if the Record is inserted into the Database and the Database is committed.
/// </p><p>
/// Win32 MSI API:
/// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msirecordsetstream.asp">MsiRecordsetStream</a>
/// </p></remarks>
public void SetStream(int field, Stream stream)
{
this.CheckRange(field);
if (stream == null)
{
uint ret = RemotableNativeMethods.MsiRecordSetStream((int)this.Handle, (uint)field, null);
if (ret != 0)
{
throw InstallerException.ExceptionFromReturnCode(ret);
}
}
else
{
Stream writeStream = null;
string tempPath = Path.GetTempFileName();
try
{
writeStream = new FileStream(tempPath, FileMode.Truncate, FileAccess.Write);
byte[] buf = new byte[512];
int count;
while ((count = stream.Read(buf, 0, buf.Length)) > 0)
{
writeStream.Write(buf, 0, count);
}
writeStream.Close();
writeStream = null;
uint ret = RemotableNativeMethods.MsiRecordSetStream((int)this.Handle, (uint)field, tempPath);
if (ret != 0)
{
throw InstallerException.ExceptionFromReturnCode(ret);
}
}
finally
{
if (writeStream != null)
{
writeStream.Close();
}
if (File.Exists(tempPath))
{
try
{
File.Delete(tempPath);
}
catch (IOException)
{
if (this.view != null)
{
this.view.Database.DeleteOnClose(tempPath);
}
}
}
}
}
}
/// <summary>
/// Sets a record stream field from a file. Stream data cannot be inserted into temporary fields.
/// </summary>
/// <param name="field">Specifies the field of the Record to set.</param>
/// <param name="filePath">Specifies the path to the file containing the stream.</param>
/// <exception cref="ArgumentOutOfRangeException">The field is less than 0 or greater than the
/// number of fields in the Record.</exception>
/// <remarks><p>
/// The contents of the specified file are read into a stream object. The stream persists if
/// the Record is inserted into the Database and the Database is committed.
/// </p><p>
/// To reset the stream to its beginning you must pass in null for filePath.
/// Do not pass an empty string, "", to reset the stream.
/// </p><p>
/// Setting a stream with this method is more efficient than setting a field to a
/// FileStream object.
/// </p><p>
/// Win32 MSI API:
/// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msirecordsetstream.asp">MsiRecordsetStream</a>
/// </p></remarks>
public void SetStream(int field, string filePath)
{
this.CheckRange(field);
if (string.IsNullOrWhiteSpace(filePath))
{
throw new ArgumentNullException("filePath");
}
uint ret = RemotableNativeMethods.MsiRecordSetStream((int)this.Handle, (uint)field, filePath);
if (ret != 0)
{
throw InstallerException.ExceptionFromReturnCode(ret);
}
}
