February 2011 – Fransiscus Setiawan | EV Charging & Azure Solution Architect

Using Disposable object

On February 18, 2011

First method is to use the “Using” keyword which is quite clean and simple

using (IDisposable obj = new DataTable())
{
//do your logic with obj variable
}

Second method is to use Try and finally keyword

IDisposable obj = null;

try
{
obj = new DataTable();
}
finally
{
if (obj != null)
{
obj.Dispose();
}
}

Remove UTF8 BOM Character from the file

By fransiscuss

On February 18, 2011

In .NET, C#

Normally when you have a UTF8 encoded file then it might have BOM character that will be rendered when you read it using filestream even though when you open the file with the notepad it doesn’t have that character.

I’ve created a function to remove the BOM character from the file

private void removeBoms(string filePattern, string directory)
{
try
{
foreach (string filename in Directory.GetFiles(directory, filePattern))
{
var bytes = System.IO.File.ReadAllBytes(filename);
if (bytes.Length > 2 && bytes[0] == 0xEF && bytes[1] == 0xBB && bytes[2] == 0xBF)
{
System.IO.File.WriteAllBytes(filename, bytes.Skip(3).ToArray());
}
}

MessageBox.Show(“Files have been processed completely!”);
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
//uncomment this for recursive
//foreach (string subDirectory in Directory.GetDirectories(directory))
//{
//    removeBoms(filePattern, subDirectory);
//}
}

How to call it

private void btnProcess_Click(object sender, EventArgs e)
{
string extension = txtExtensions.Text;

if (extension.Trim().Length > 0 || folderBrowserDialog1.SelectedPath.Trim().Length > 0)
{
if (!extension.StartsWith(“*.”))
{
extension = “*.” + extension;
}

//just process the html files
removeBoms(extension, folderBrowserDialog1.SelectedPath);
}
else
{
if (extension.Trim().Length == 0)
{
txtExtensions.Focus();
MessageBox.Show(“Please specify the extension files”);
}
else if (folderBrowserDialog1.SelectedPath.Trim().Length == 0)
{
MessageBox.Show(“Please select target folder”);
}
}

}