how to check text data is modified or not in text box

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HI i have a one text box. i am writing some text in text box and save this text as a word file.
if i write some text in a text box and doesn't save the text and then close the application at that time i want a message "The data has not been saved are you want to close the application"
how could i do this ?

Thanks in Advance ...

Posted 3-Feb-12 1:13am

mayankshrivastava

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Sridhar Patnayak · Answer 1 · 2012-02-03T01:21:00

Solution 1

It is very simple it is only logic

1.
Count text length when he close the application, if the length>0
prompt appropriate message.

If you want to know the user modified in the textbox or not
Look it

Maintain status variable initially Zero

In the

TextChanged

event set status=1 and prompt your message

Thanks
SP

Posted 3-Feb-12 1:21am

Sridhar Patnayak

Updated 3-Feb-12 4:37am

v2

Comments

bbirajdar 3-Feb-12 7:53am

Good answer. .My 4

Sridhar Patnayak 3-Feb-12 10:35am

Thanks Bijdar

mayankshrivastava 4-Feb-12 4:01am

Thanks for reply sridhar,
when i open my project text box is empty.suppose i wrote something in text box and exit the application without saving this text i want a message "The document has still not been saved. Are you sure you want to close the application?" ok
but when i wrote something in text box and save the text box data as a word file and close the application i want directly exit don't show any message.because i already save the data.

mayankshrivastava 4-Feb-12 4:06am

for example- open any word file and write something then close it show's message and when u already save the file it doesn't show any message and directly close the application.

Sanjay K. Gupta · Answer 2 · 2012-02-03T01:25:00

Solution 2

Declare a member variable as

C#

flagTextChanged=false;

OnTextChanged of TextBox

C#

flagTextChanged=true;

OnFormClose

C#

if(flagTextChanged)
MessageBox.Show("Not Saved Message");

Best of Luck

Posted 3-Feb-12 1:25am

Sanjay K. Gupta

Updated 3-Feb-12 9:20am

v2

astika · Answer 3 · 2012-02-03T01:36:00

Solution 3

Hi,

you can check it at the leave event of the textbox.

if you did not know leave event of textbox then read

[^]

Leave event of textbox is fire when you leave textbox.

Posted 3-Feb-12 1:36am

astika