I have the following function:

public void GetTextTab(string txt, int tab)
{
    txtlist.Clear();
    int textparagraph = txt.Length;
    string str;
    int indexer = 0;
    int counter;
    if (tab == 3)
    {
        charcounter = 50;

    }
    else
    {
        charcounter = 60;

    }
    for (int i = 0; i < (txt.Length / charcounter)   1; i  )
    {

        counter = textparagraph - indexer;
        if (counter < charcounter)
        {
            str = txt.Substring(indexer, counter);
            indexer = indexer   charcounter;
            str = str.Trim();
            txtlist.Add(str);
            return;
        }

        str = txt.Substring(indexer, charcounter);

        if ((charcounter == 50) && (str.LastIndexOf(" ") != 49) || (charcounter == 60) && (str.LastIndexOf(" ") != 59))
        { 
            charcounter = str.LastIndexOf(" ");
        }

        str = txt.Substring(indexer, charcounter);

        str = str.Trim();

        indexer = indexer   charcounter;
        txtlist.Add(str);
    }

}

What it does is reading text paragraphs and creating separate rows from them with 50 or 60 characters in a Word file. What I want to do do is a line break in each line after the last occurence of a space (" ") so that the text goes to a new row and the words don't get divided.

This is my input:

Aaczqwfasda dsafewrgfdhgf klgfdlffwerqwepqcz dsadsaewqdasdas

What I get is something like this:

Aaczqwfasda dsafewrgfdhgf klgfdlff
werqwepqcz dsadsaewqdasdas

What I need is that:

Aaczqwfasda dsafewrgfdhgf
klgfdlffwerqwepqcz dsadsaewqdasdas

I tried doing this by writing the last if-statement at the end of the code but it's still not working properly - it only does for the first row. For the next ones the words keep getting divided.

What can I do to achieve what I want? Any help would be greatly appreciated.

CodePudding user response：

Here is how you can use the IndexOf to determine spot that you need to split the string at 60 characters

string s = "Aaczqwfasda dsafewrgfdhgf klgfdlffwerqwepqcz dsadsaewqdasdas";
int iCounter = 0;
while(true)
{
    int temp = s.IndexOf(' ', iCounter   1);
    if (temp > 0 && temp < 61)
        iCounter = temp;
    //break if we have no more spaces or exceed the 60 char limit
    if (temp == -1 || temp > 60) break;
}

MessageBox.Show(s.Substring(0,iCounter));