Read data from text file and fill TextBox by splitting values using C# and VB.Net in ASP.Net

Hi ahmedba,

Considering the Text format will remain the same everytime on that basis created a sample refer it and modify the code according to your need.

Refer below sample code

C#

private void Form1_Load(object sender, EventArgs e)
{
    string line = "";
    System.IO.StreamReader file = new System.IO.StreamReader(@"FilePathWithNameAndExtension");
    while (!file.EndOfStream)
    {
        line += file.ReadLine() + "&"; //adding distinct value so that we can split them as a line.
    }
    string[] newLines = line.Split('&'); //storing lines in array.
    txtUserName.Text = newLines[1].Split(':')[1].ToString(); //newLines[1] represent to UserName that means we will extract from second line which is storing the username.
    txtCountry.Text = newLines[2].Split(':')[1].ToString();
    txtMemberShip.Text = newLines[3].Split(':')[1].ToString();
}

VB.Net

Private Sub Form1_Load(sender As Object, e As EventArgs)
	Dim line As String = ""
	Dim file As New System.IO.StreamReader("FilePathWithNameAndExtension")
	While Not file.EndOfStream
			'adding distinct value so that we can split them as a line.
		line += file.ReadLine() + "&"
	End While
	Dim newLines As String() = line.Split("&"C)
	'storing lines in array.
	txtUserName.Text = newLines(1).Split(":"C)(1).ToString()
	'newLines[1] represent to UserName that means we will extract from second line which is storing the username.
	txtCountry.Text = newLines(2).Split(":"C)(1).ToString()
	txtMemberShip.Text = newLines(3).Split(":"C)(1).ToString()
End Sub