c# Search specified string inside textbox
int pos = textbox1.Text.IndexOf("YYMM");
if(pos != -1)
{
textbox1.SelectionStart = pos;
textbox1.SelectionLength = 4;
// MessageBox("Error");
}c# Search specified string inside textbox
int pos = textbox1.Text.IndexOf("YYMM");
if(pos != -1)
{
textbox1.SelectionStart = pos;
textbox1.SelectionLength = 4;
// MessageBox("Error");
}c# Search specified string inside textbox
//Search and highlight text in Textbox or richTextBox in C#
int index = 0;
string temp = richTextBox1.Text;
richTextBox1.Text = "";
richTextBox1.Text = temp;
while (index < richTextBox1.Text.LastIndexOf(textBox1.Text))
{
// Searches the text in a RichTextBox control for a string within a range of text withing the control and with specific options applied to the search.
richTextBox1.Find(textBox1.Text, index, richTextBox1.TextLength, RichTextBoxFinds.None);
// Selection Color. This is added automatically when a match is found.
richTextBox1.SelectionBackColor = Color.Yellow;
// After a match is found the index is increased so the search won't stop at the same match again. This makes possible to highlight same words at the same time.
index = richTextBox1.Text.IndexOf(textBox1.Text, index) + 1;
}Copyright © 2021 Codeinu
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