writing from inside for loop

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Hello I have a loop in wpf that i want to write it, it seems simple but new to wpf so dont know exact way to do it.
I have

C#

for (int 1=0; i<10; i++)
{
textBlock1.Text="Number is:" +i.ToString();
}

so the output should be

Number is: 1
Number is: 2
Number is: 3
.......
Number is: 9

but the above textBlock doesnt work, any suggestions how it can be implemented?
Thanks

Posted 31-May-12 8:15am

EricThe

Updated 31-May-12 9:46am

Sandeep Mewara

v2

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OriginalGriff · Accepted Answer · 2012-05-31T08:28:00

Solution 1

Change the "=" to a "+=" is the simplest to implement:

C#

for (int 1=0; i<10; i++)
   {
   textBlock1.Text="Number is:" +i.ToString();
   }

Becomes

C#

for (int 1=0; i<10; i++)
   {
   textBlock1.Text+="Number is:" +i.ToString();
   }

But a better solution would be to use a StringBuilder:

C#

StringBuilder sb = new StringBuilder();
for (int 1=0; i<10; i++)
   {
   sb.AppendFormat("Number is: {0}\n", i);
   }
textBlock1.text = sb.ToString();

Posted 31-May-12 8:28am

OriginalGriff

Comments

db7uk 31-May-12 14:52pm

Yes My 5! Often I see string concatenation using += etc. StringBuilder (IMHO) should always be considered if multiple strings are being created!

Oleksandr Kulchytskyi 31-May-12 15:51pm

It's great that you mentioned about string concatenations.
Often it became a big punch for beginners, while they operate with string data.

Maciej Los 31-May-12 16:00pm

Good advise, my 5!