Windows Application: Check file starting with name exists in directory (folder) using C# and VB.Net

Hi dnnyobi,

Use string.StartsWith function for checking.

Refer below code.

Code

C#

private void Form1_Load(object sender, EventArgs e)
{
    string[] filesPath = System.IO.Directory.GetFiles(@"C:\Files");
    foreach (string filePath in filesPath)
    {
        string fileName = System.IO.Path.GetFileName(filePath).ToLower();
        if (fileName.StartsWith("a") || fileName.StartsWith("b"))
        {
            MessageBox.Show(filePath);
        }
    }
}

VB.Net

Private Sub Form1_Load(ByVal sender As Object, ByVal e As EventArgs) Handles MyBase.Load
    Dim filesPath As String() = System.IO.Directory.GetFiles("C:\Files")
    For Each filePath As String In filesPath
        Dim fileName As String = System.IO.Path.GetFileName(filePath).ToLower()
        If fileName.StartsWith("a") OrElse fileName.StartsWith("b") Then
            MessageBox.Show(filePath)
        End If
    Next
End Sub