3
Answers

error-40 sql exception

krishna prasad

krishna prasad

16y
5.4k
1
Hai all...

I am  getting this following error when i try to connect to the database....

An error has ocured while establishing a connection to the server.When connecting to sql server 2005,this failure  may  be caused by the fact that that under the default settings SQL server 2005 does not allow remote connections.(Providre:Named Pipes Provider,Error:40-could not open a connection to sql server)

Help me please....
Answers (3)
0
Kunal Vaishya

Kunal Vaishya

NA 4.1k 266k 12y
Dear Null and Character String cant Add by this way if you want to add numeric then you should do like this


TextBox3.Text = (Convert.ToDouble(Convert.ToString(textBox1.Text)) + Convert.ToDouble(Convert.ToString(textBox2.Text))).ToString();

in Text Change Event

it will convert zero if null exist



you can also chaeck by TextBox1.TextLenght  = 0  then zero value


0
Anil Kumar

Anil Kumar

NA 11.8k 982.9k 12y

Yes, It would raise error as you are trying to add "" (empty text) with your 2/3 texbox's values(integer).

Just initialize (default Text value) all your textboxes with 0 or 0.00

So, no matter how many inputs you give, it will not give you error. 
0
praveen maurya

praveen maurya

NA 0 13.1k 12y
hello there 

it is a windows application now i am attaching my whole project in this project i am doing five addition and get and get five output at a click but is i only want to do only 2 addition and the remaining textbox left emty then the programme is showing error THAT """Input string was not in a correct format."""""  

please help me to ignore the remaining textbox 

0
Anil Kumar

Anil Kumar

NA 11.8k 982.9k 12y

Is it a Win or Web application? And what kind of error are you getting? How are you implementing your logic? 
Please provide more details to resolve your problem.