Selecting Text based on an index position and String Length

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1

hi,

I want to select some text based on an index position in the document and length and delete it. I don’t know the string contents so I can’t use range.replace which depends on a regex expression.

How do I do this.

Thanks Bruce

2

Hi
Thanks for your request. There is no such built-in functionality. However, I think this could be implemented. If you need I can try to create sample code for you. If so please attach sample document and provide me test inputs (indexes and lengths).
Best regards.

3

hi,

Just any document would be fine. Say with 50 characters in it and the ability to delete characters 10-15.

Should be very simple.

Cheers Bruce

4

Hi
Thanks you for additional information. You can try using the following code:

int startPosition = 9;
int length = 5;
// Open document
Document doc = new Document(@"Test065\in.doc");
// Get paragraph which we should edit
Paragraph par = doc.FirstSection.Body.FirstParagraph;
int currentPosition = 0;
foreach (Run run in par.Runs)
{
    // Set current position
    currentPosition += run.Text.Length;
    if (currentPosition <= startPosition)
    {
        continue;
    }
    else
    {
        int tmpStart = 0;
        int tmpLenth = 0;
        // Calculate position in current run
        if (currentPosition - run.Text.Length < startPosition)
        {
            tmpStart = startPosition - (currentPosition - run.Text.Length);
        }
        // Calculate lenth of sub string that should be removed from current run
        if (run.Text.Length - tmpStart >= length)
        {
            tmpLenth = length;
        }
        else
        {
            tmpLenth = run.Text.Length - tmpStart;
        }
        // Reset lenth
        length = length - tmpLenth;
        if (tmpLenth == 0)
            break;
        // Remove substring from current run
        run.Text = run.Text.Remove(tmpStart, tmpLenth);
    }
}
// Save output document
doc.Save(@"Test065\out.doc");

Hope this helps.
Best regards.

5

Hi,

Thanks for that. Does this only work per paragraph? Can I apply it to the entire document - as I won’t know the section or paragraph.

Thanks Bruce

6

Hi
Thanks for your request. You can try using the following:

// Get Runs from the document
NodeCollection runs = doc.GetChildNodes(NodeType.Run, true);
int currentPosition = 0;
foreach (Run run in runs)
{

However, note this code will not remove paragraph or section breaks. If you need to do that, you can modify this code.
Best regards.