how to check each elements of string array contains data or not in c#

Question

i have created web application and using textbox and it can contains multiple line of data becoz i have set its textmode property is multiline. my problem is that i want to check each line contain data or not so i using count variable which count how many line contain data.

string[] data;
int cntindex;   
data = txt_invoicenumber.Text.ToString().Split("\n".ToCharArray());
cntindex = data.Length;
for (j = 0; j < cntindex; j++)
{
    if (data[j]!="")  
    {
        inv_count++;            
    }        
}

Its not working. Please help me.

I'd recommend using string.IsNullOrEmpty().

nothrow
– nothrow

2010-06-22 11:24:06 +00:00
Commented Jun 22, 2010 at 11:24 — nothrow
– nothrow, Commented Jun 22, 2010 at 11:24

Itay Karo · Accepted Answer · 2010-06-22 11:05:23Z

1

I guess this is because new line is \r\n so there is a '\r' also on empty lines.
Change the if statement to:

if (data[j].Trim().Length != 0)

answered Jun 22, 2010 at 11:05

Itay Karo

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Comments

Greg B · Accepted Answer · 2010-06-22 11:06:46Z

0

Firstly, You don't need to ToString() the .Text property as it is already a string.

try this

string[] lines = txt_invoicenumber.Text.Split(Environment.NewLine);
int lineCount = 0;
foreach(string line in lines)
{
    if(!string.IsNullOrEmpty(line))
    {
        lineCount ++;
        this.ProcessLine(line);
    }
}

answered Jun 22, 2010 at 11:06

Greg B

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Comments

Terje · Accepted Answer · 2010-06-22 11:19:03Z

0

var lb = new String[] { "\r\n" };    
var lines = txt_invoicenumber.Text.Split(lb, StringSplitOptions.None).Length;

This will count empty lines too. If you don't want to count empty lines, use the StringSplitOptions.RemoveEmptyEntries value.

Don't count 100% on "\r\n" if you have little control over your environment though.

answered Jun 22, 2010 at 11:19

Terje

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Comments

Ben Cawley · Accepted Answer · 2010-06-22 11:24:48Z

0

This is the answer I came up with.

String[] lines = TextBox1.Text.Split(new Char[] { '\r', '\n' },
                                     StringSplitOptions.RemoveEmptyEntries);
Int32 validLineCount = lines.Length;

answered Jun 22, 2010 at 11:24

Ben Cawley

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