TextFrame.Find Method — TX Text Control .NET for WPF

Description

Finds a text string in a text frame.

Syntax

public int Find(string text, int start, FindOptions options);

Public Function Find(text As String, start As Integer, options As FindOptions) As Integer

Parameters

Parameter	Description
text	Specifies the text to search for.
start	Specifies the text position where the search starts, beginning with 0. If this value is -1, the search begins at the current text input position.
options	Specifies search options. It can be a combination of the FindOptions values.

Return Value

If the text searched for is found, the method returns the index (zero-based) of the first character of the search string. If the specified text is not found the method returns -1.

Examples

The following example counts all occurrences of the specified string in all text frames of a TX Text Control document:

int position = 0, count = 0;

foreach (TextFrame tf in textControl1.TextFrames)
{
    for (position=0;
    (position = tf.Find("test", position, FindOptions.NoHighlight | FindOptions.NoMessageBox)) != -1;
    count++, position++);
}

Dim position As Integer = 0, count As Integer = 0

For Each tf As TextFrame In textControl1.TextFrames
    position = 0
    While (position = tf.Find("test", position, FindOptions.NoHighlight Or FindOptions.NoMessageBox)) <> -1
        count += 1
        position += 1
    End While
Next

The following example applies bold formatting through the text frame's selection by using TextFrame.Find.

Selection formattedSelection = textFrame.Selection;
formattedSelection.Bold = true;
textFrame.Selection = formattedSelection;

int position = textFrame.Find("Quarterly results", 1, FindOptions.Reverse);
if (position >= 0)
{
    Console.WriteLine($"Found at position {position}.");
}

Dim formattedSelection As Selection = textFrame.Selection
formattedSelection.Bold = True
textFrame.Selection = formattedSelection

Dim position As Integer = textFrame.Find("Quarterly results", 1, FindOptions.Reverse)
If position >= 0 Then
    Console.WriteLine($"Found at position {position}.")
End If