CODEWITHSUNDEEP
c#.net
user1326461
user1326461

Reputation: 125

Stringbuilder and arrays

I have an array e.g. string[] ccsplit.

I want to add all of these into a string, so I use stringbuilder:

StringBuilder builder = new StringBuilder();
foreach (string str in ccsplit)
{
    builder.Append(str);
}

But the only problem is that I don't want the string ccsplit[0] to be added to the stringbuilder, how could I achieve this?

Upvotes: 1

Views: 907

Answers (12)

Tim Schmelter
Tim Schmelter

Reputation: 460360

You could also use LINQ to concat all strings:

String result = ccsplit.Skip(1).Aggregate((s1, s2) => s1 + s2);

Edit: Here's a version that uses StringBuilder:

String result = ccsplit.Skip(1).Aggregate(new StringBuilder(),
                (sb, str) => sb.Append(str),
                (sb) => sb.ToString());

Enumerable.Aggregate

Upvotes: 2

Carlos Quintanilla
Carlos Quintanilla

Reputation: 13343

Change the foreach by a for starting the index at 1 instead of 0 

for (int i = 1; i <= ccsplit.Length-1; i++)
{
   builder.Append(ccsplit[i]);
}

Upvotes: 0

SiliconMind
SiliconMind

Reputation: 2179

You probably need a string in the end, so just use appropriate string.Join overload instead of StringBuilder and a loop:

string combined = string.Join(string.Empty, ccsplit, 1, ccsplit.Length - 1);

Upvotes: 1

Alex Mendez
Alex Mendez

Reputation: 5150

You can do it like this:

StringBuilder builder = new StringBuilder(); 
for (int ccsplitIndex = 1; ccsplitIndex < ccsplit.Length; ccsplitIndex++) 
{ 
    builder.Append(ccsplit[ccsplitIndex]); 
}

Upvotes: 0

Nikhil Agrawal
Nikhil Agrawal

Reputation: 48600

One Line Answer

string str = string.Join("", ccsplit.Skip(1).ToArray());

Upvotes: 4

Henk Holterman
Henk Holterman

Reputation: 273854

There's not even a need to use a StringBuilder or a loop. 

 string result = String.Concat(ccsplit.Skip(1));

Will do the job. You do need Fx 4 or later.

Upvotes: 10

Zaki
Zaki

Reputation: 5600

Use for loop : 

  StringBuilder builder = new StringBuilder();
    for(int i = 1; i < ccsplit.Length; i++)
    {
         builder.Append(ccsplit[i]);
    }

Upvotes: 0

albertjan
albertjan

Reputation: 7817

This is how you could do it without LINQ. 

for (var i = 1; i < ccsplit.Length; i++){
    builder.Append(ccsplit[i]);
}

Upvotes: 2

Sandeep
Sandeep

Reputation: 7334

You can start the index at 1 all the time and append it to stringbuilder.

for(int i=1; i<lengthOfArray;i++)
{
    //Do your stuff.
}

Upvotes: 7

Jonas Stensved
Jonas Stensved

Reputation: 15326

You can use Skip() http://msdn.microsoft.com/en-us/library/bb358985.aspx

 StringBuilder builder = new StringBuilder();
        foreach (string str in ccsplit.Skip(1))
        {
            builder.Append(str);
        }

Upvotes: 2

Dave Markle
Dave Markle

Reputation: 97861

using System.Linq;

...

StringBuilder builder = new StringBuilder(); 
foreach (string str in ccsplit.Skip(1)) 
{ 
    builder.Append(str); 
}

Upvotes: 1

Botz3000
Botz3000

Reputation: 39670

If you can use Linq, you could use the Skip extension method:

foreach (string str in ccsplit.Skip(1)) 
{
    builder.Append(str);
}

or, without Linq:

for (int i = 1; i < ccsplit.Length; i++) {
    builder.Append(ccsplit[i]);
}

Upvotes: 3

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