Reads a number of characters from the current source TextReader and writes the data to the target array at the specified index. - CSharp System

CSharp examples for System:Array Index

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Description

Reads a number of characters from the current source TextReader and writes the data to the target array at the specified index.

Demo Code



public class Main{
        /// <summary>Reads a number of characters from the current source TextReader and writes the data to the target array at the specified index.</summary>
      /// <param name="sourceTextReader">The source TextReader to read from</param>
      /// <param name="target">Contains the array of characteres read from the source TextReader.</param>
      /// <param name="start">The starting index of the target array.</param>
      /// <param name="count">The maximum number of characters to read from the source TextReader.</param>
      /// <returns>The number of characters read. The number will be less than or equal to count depending on the data available in the source TextReader. Returns -1 if the end of the stream is reached.</returns>
      public static System.Int32 ReadInput(System.IO.TextReader sourceTextReader, byte[] target, int start, int count)
      {//w ww.  j  a v  a  2 s  .  c  o  m
         // Returns 0 bytes if not enough space in target
         if (target.Length == 0) return 0;

         char[] charArray = new char[target.Length];
         int bytesRead = sourceTextReader.Read(charArray, start, count);

         // Returns -1 if EOF
         if (bytesRead == 0) return -1;

         for(int index=start; index<start+bytesRead; index++)
            target[index] = (byte)charArray[index];

         return bytesRead;
      }
        /*******************************/
      /// <summary>Reads a number of characters from the current source Stream and writes the data to the target array at the specified index.</summary>
      /// <param name="sourceStream">The source Stream to read from.</param>
      /// <param name="target">Contains the array of characteres read from the source Stream.</param>
      /// <param name="start">The starting index of the target array.</param>
      /// <param name="count">The maximum number of characters to read from the source Stream.</param>
      /// <returns>The number of characters read. The number will be less than or equal to count depending on the data available in the source Stream. Returns -1 if the end of the stream is reached.</returns>
      public static System.Int32 ReadInput(System.IO.Stream sourceStream, byte[] target, int start, int count)
      {
         // Returns 0 bytes if not enough space in target
         if (target.Length == 0)
            return 0;

         byte[] receiver = new byte[target.Length];
         int bytesRead   = sourceStream.Read(receiver, start, count);

         // Returns -1 if EOF
         if (bytesRead == 0)   
            return -1;
                
         for(int i = start; i < start + bytesRead; i++)
            target[i] = (byte)receiver[i];
                
         return bytesRead;
      }
}

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