how do I can count the number of characters in richtexts line?

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I want to know how many dot in a line.User'll enter a string in multipleline richtext.A function will count the number of dots in rows.
If User press back key,reducing the number of dots.
If the dot in another line,does not increase the number of dots.

Posted 26-Jul-12 23:53pm

giatuan2011

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Raje_ · Answer 1 · 2012-07-27T17:51:00

Solution 1

If you want to use javascript code then here you go:-

JavaScript

function CountChar(sender) {
          var str = sender.value;
          var res = str.split("a").length - 1;
          document.getElementById("lblText").innerHTML = res;
      }

Now onkeydown property of TextBox call the function:-

ASP.NET

<asp:TextBox ID="txtText" runat="server" onkeydown="CountChar(this)" />

Good luck

Posted 27-Jul-12 17:51pm

Raje_

Updated 28-Jul-12 1:23am

v2

Comments

giatuan2011 28-Jul-12 1:09am

How to reduce Count when I hit back or delete dots?

Raje_ 28-Jul-12 7:24am

you can use javascript for that, see my updated solution.

Raje_ · Answer 2 · 2012-07-27T18:00:00

You can use this code:-

C#

string str = txtText.Text;
int res = str.Length - str.Replace(".", "").Length;
lblText.Text = res.ToString();

Or you can use linq 'Count' extension method,

C#

string str = txtText.Text;
int res = str.ToCharArray().Count(c => c == '.');
lblText.Text = res.ToString();

Good luck

AshishChaudha · Answer 3 · 2012-07-27T18:13:00

Try funtion in javascript and call this funtion in onkeydown event.

JavaScript

function textCounter(field,countfield,maxlimit)
        {
        //alert(maxlimit);
            if(field.value.length>maxlimit)
            field.value=field.value.substring(0,maxlimit);
            else
            countfield.value=maxlimit - field.value.length;
            if(countfield.value==0)
            alert("Maxlimit is over");
        }

Thanks
AShish

how do I can count the number of characters in richtexts line?

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