CODEWITHSUNDEEP
c#
Siddiqui
Siddiqui

Reputation: 7840

Accessing Textbox selected value in c#

I have multi-lines textbox in c# window-base application. If user click on textbox I want to get the value of selected line. Kindly guide me so that I can make it possible.

Sorry for my bad english.

Upvotes: 2

Views: 2243

Answers (5)

YaoChen Aan
YaoChen Aan

Reputation: 19

Use the KeyUp event, like:
Private Sub TextBox1_KeyUp(sender As Object, e As KeyEventArgs) Handles TextBox1.KeyUp
MyString = TextBox1.SelectedText
End Sub

Upvotes: 0

stack72
stack72

Reputation: 8278

I'm hoping that you mean a listbox?

listBox.SelectedItem gives a ListItem and then you can get the Text or Value from there

Upvotes: 2

Dmitry Karpezo
Dmitry Karpezo

Reputation: 1058

Very briefly:

int sel = this.textBox1.SelectionStart;
string text = this.textBox1.Text;
int selstart = 0;
int selend = 0;
int i = 0;
for (i = sel; i > 0; i--)
    if (text[i] == '\n')
        break;
selstart = i;
for (i = sel; i < text.Length; i++)
    if (text[i] == '\n')
        break;
selend = i;
string line = text.Substring(selstart, selend - selstart);

'line' is the line you pointed.

EDITED: Fara posted better solution.

Upvotes: 1

Alex McBride
Alex McBride

Reputation: 7011

You can try something along the lines of:

// Get selected character.
int charIndex = textbox.SelectionStart;

// Get line index from selected character.
int lineIndex = textbox.GetLineFromCharIndex(charIndex);

// Get line.
string line = textbox.Lines[lineIndex];

Upvotes: 4

anivas
anivas

Reputation: 6547

If its a multi-line enabled textbox you can use the Lines property.

Upvotes: 1

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