Replace First and Last characters from String in C# and VB.Net

Hi SUJAYS,

Please refer below sample.

Code

C#

protected void Page_Load(object sender, EventArgs e)
{
    string oldchar = "TSPForums.nea";
    string outcome = ReplaceLeft(oldchar);
    string finaloutcom = ReplaceRight(outcome);
    Response.Write("<b>" + oldchar + "</b>" + " After replacing left and right characters <b>" + finaloutcom + "</b>");
}

public string ReplaceLeft(string oldcharacterLeft)
{
    string result1 = oldcharacterLeft.Replace(oldcharacterLeft.Substring(0, oldcharacterLeft.Length + 1 - oldcharacterLeft.Length), "A");
    return result1;
}

public string ReplaceRight(string oldchrRight)
{
    string result2 = oldchrRight.Replace(oldchrRight.Substring(oldchrRight.Length - 1), "t");
    return result2;
}

VB.Net

Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
    Dim oldchar As String = "TSPForums.nea"
    Dim outcome As String = ReplaceLeft(oldchar)
    Dim finaloutcom As String = ReplaceRight(outcome)
    Response.Write("<b>" & oldchar & "</b>" & " After replacing left and right characters <b>" & finaloutcom & "</b>")
End Sub

Public Function ReplaceLeft(ByVal oldcharacterLeft As String) As String
    Dim result1 As String = oldcharacterLeft.Replace(oldcharacterLeft.Substring(0, oldcharacterLeft.Length + 1 - oldcharacterLeft.Length), "A")
    Return result1
End Function

Public Function ReplaceRight(ByVal oldchrRight As String) As String
    Dim result2 As String = oldchrRight.Replace(oldchrRight.Substring(oldchrRight.Length - 1), "t")
    Return result2
End Function

Output

TSPForums.nea After replacing left and right characters ASPForums.net