finding string problem c#

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I have a problem that I am finding a string that is coming via machine and putting the values in datagrid. Machine is a note sorting machine and sometimes it gives reject notes sometimes not. My question is when it is giving rejects my code is working fine. However when it is not giving any rejects it gives some other data that i dont want i want zero to be displayed. Here is the con how can i do it.

C#

string o=@"Reject      count          value
--------------------------------";

                int a = str.IndexOf(o) + o.Length;
             //  if(
                //{
                    string p = "Total:";
                    int b = str.IndexOf(p, a);
                    string b = str.Substring(a, b-a);
                    dataGridView1.Rows[n].Cells[5].Value = str6;

Posted 12-Jun-15 6:12am

Member 11403387

Updated 12-Jun-15 6:42am

Richard Deeming

v2

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Richard Deeming 12-Jun-15 12:43pm

That's the second time I've seen a question from you which contains a "netseer" script block at the bottom.

If you're trying to inject third-party adverts into the site, it's not going to work.

If you didn't type the script block, then you have malware installed on your computer.

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stixoffire · Accepted Answer · 2015-06-12T06:44:00

While your code example seems hard to read and could be more clear - I think this is what you are after:

C#

string o=@"Reject      count          value";

// Changed this Code
// Gets the index of string O in the string
// int a = str.IndexOf(o) + o.Length;

int a = str.IndexOf(o);

// End Changed Code

// Added Code check if the string o=@"Reject      count          value" is even found
if(a != -1)
{

// End Added Code


// Changed Code -
// Adding th elenght of your string to int a [Index + String o length ]

a += o.Length;

// End Changed Code


string p = "Total:";
// Starting at point a in string str
// get index of string P
int b = str.IndexOf(p, a);

// String b? b is defined as int already - lets call it best
string best = str.Substring(a, b-a);
dataGridView1.Rows[n].Cells[5].Value = str;


// Added Code
}
Else  // o "Reject      count          value" was not found
{
// Do what you need to for a non reject - set the value to 0
str = 0;

}
// End Added Code