System Namespace Convert Class
Converts the value of an array of 8-bit unsigned integers to its equivalent String representation consisting of base 64 digits.
1. Converts the value of an array of 8-bit unsigned integers to its equivalent String representation consisting of base 64 digits.
2. Converts the value of a subset of an array of 8-bit unsigned integers to its equivalent String representation consisting of base 64 digits. Parameters specify the subset as an offset and number of elements in the array.
The following sample demonstrates the ToBase64String method.
NOTE: This example shows how to use one of the overloaded versions of ToBase64String. For other examples that might be available, see the individual overload topics.
[ VB ]
Public Sub EncodeWithString ( )
Dim inFile As System.IO.FileStream
Dim binaryData ( ) As Byte
Try
inFile = New System.IO.FileStream ( inputFileName, _
System.IO.FileMode.Open, _
System.IO.FileAccess.Read )
ReDim binaryData ( inFile.Length )
Dim bytesRead As Long = inFile.Read ( binaryData, _
0, _
inFile.Length )
inFile.Close ( )
Catch exp As System.Exception
' Error creating stream or reading from it.
System.Response.WriteLine ( "{0}", exp.Message )
Return
End Try
' Convert the binary input into Base64 UUEncoded output.
Dim base64String As String
Try
base64String = System.Convert.ToBase64String ( binaryData, _
0, _
binaryData.Length )
Catch exp As System.ArgumentNullException
System.Response.WriteLine ( "Binary data array is null." )
Return
End Try
' Write the UUEncoded version to the output file.
Dim outFile As System.IO.StreamWriter
Try
outFile = New System.IO.StreamWriter ( outputFileName, _
False, _
System.Text.Encoding.ASCII )
outFile.Write ( base64String )
outFile.Close ( )
Catch exp As System.Exception
' Error creating stream or writing to it.
System.Response.WriteLine ( "{0}", exp.Message )
End Try
End Sub
[ C# ]
public void EncodeWithString ( ) {
System.IO.FileStream inFile;
byte [ ] binaryData;
try {
inFile = new System.IO.FileStream ( inputFileName,
System.IO.FileMode.Open,
System.IO.FileAccess.Read );
binaryData = new Byte [ inFile.Length ];
long bytesRead = inFile.Read ( binaryData, 0,
( int ) inFile.Length );
inFile.Close ( );
}
catch ( System.Exception exp ) {
// Error creating stream or reading from it.
System.Response.WriteLine ( "{0}", exp.Message );
return;
}
// Convert the binary input into Base64 UUEncoded output.
string base64String;
try {
base64String =
System.Convert.ToBase64String ( binaryData,
0,
binaryData.Length );
}
catch ( System.ArgumentNullException ) {
System.Response.WriteLine ( "Binary data array is null." );
return;
}
// Write the UUEncoded version to the output file.
System.IO.StreamWriter outFile;
try {
outFile = new System.IO.StreamWriter ( outputFileName,
false,
System.Text.Encoding.ASCII );
outFile.Write ( base64String );
outFile.Close ( );
}
catch ( System.Exception exp ) {
// Error creating stream or writing to it.
System.Response.WriteLine ( "{0}", exp.Message );
}
}
Convert Members
