How to resolve error "Input string is not in correct format"

Question

i am making application in c#.In that application i am using Code as

 private void WriteCurrentData(HttpRequest request, TextWriter writer)
{
      Stream = Convert.ToString(objstream.m_StreamData[1]);
      writer.WriteLine(string.Format(Stream));
      writer.Flush();
}

where m_StreamData is ArrayList. but sometimes i am getting error as

System.FormatException: Input string was not in correct format at System.Text.StringBuilder.AppendFormat() at System.String.Format()

Please Help me.Thanks in advance.

Why do you use string.Format ? May be use writer.WriteLine(Stream); — turbanoff
– turbanoff, Commented Mar 2, 2012 at 7:25

Henk Holterman · Accepted Answer · 2012-03-02 07:51:36Z

3

The String.Format() inside your WriteLine() tries to interpret the string (again). You already converted it to a string, so:

//writer.WriteLine(string.Format(Stream));
writer.WriteLine(Stream);

edited Mar 2, 2012 at 7:51

answered Mar 2, 2012 at 7:27

Henk Holterman

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