How do I change string[] lines into output string

Question

1.00/5 (1 vote)

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How do I change string[] lines into output string?

C#

protected void Button1_Click(object sender, EventArgs e)
        {
            string data1 = TextBox1.Text;
            using (System.IO.FileStream fs = new System.IO.FileStream(Server.MapPath("~/data.txt"), System.IO.FileMode.Append, System.IO.FileAccess.Write, System.IO.FileShare.Read, 8, System.IO.FileOptions.None))
            {
                byte[] data = System.Text.Encoding.ASCII.GetBytes(data1);
                fs.Write(data, 0, data.Length);
                fs.Flush();
                fs.Close();
            }
        }

        protected void Button2_Click(object sender, EventArgs e)
        {
            string[] lines = File.ReadAllLines(Server.MapPath("~/data.txt"));
            string stglines
            ???change string[] to strlines
            TextBox2.Text = strline.ToString();
        }

Posted 6-Jan-15 9:27am

teledexterus

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2 solutions

Solution 2

All you need to do is to loop through the collection of lines using StringBuilder class[^].

C#

StringBuilder sb = new StringBuilder(); foreach (string str in lines) { sb.Append(str); } //finally: TexBox2.Text = sb.ToString();

But, personally, i'd suggest to use solution 1.

[EDIT]
String.Concat() method[^] concatenates the elements of a specified String array.

Thank you, PIEBALDconsult. I forgot about that method!

Posted 6-Jan-15 11:29am

Maciej Los

Updated 6-Jan-15 12:20pm

v3

Comments

PIEBALDconsult 6-Jan-15 18:08pm

Why not just String.Concat?

Maciej Los 6-Jan-15 18:17pm

Good idea!

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PIEBALDconsult · Accepted Answer · 2015-01-06T09:35:00

Solution 1

Why not use ReadAllText(String) instead?

Posted 6-Jan-15 9:35am

PIEBALDconsult

Comments

teledexterus 6-Jan-15 15:45pm

How do you use ReadAllText as a string and not a string[]?

PIEBALDconsult 6-Jan-15 15:50pm

It just is.

CPallini 6-Jan-15 15:53pm

The way he suggested, namely:
string stglines = File.ReadAllText(Server.MapPath("~/data.txt"));

CPallini 6-Jan-15 15:53pm

5.

teledexterus 6-Jan-15 15:59pm

If you do not use the "[]" File.ReadAllText does not work. I need to convert string[] to string.

PIEBALDconsult 6-Jan-15 16:01pm

You haven't tried it have you?

Return Value
Type: System.String
A string containing all lines of the file.

Maciej Los 6-Jan-15 17:30pm

+5!

Agent__007 7-Jan-15 2:33am

+5d!