Data is not inserted into database, windows,c#

Question

0.00/5 (No votes)

See more:

Hi,
I am currently working with a windows application project. In that I tried to insert data into a table. All the lines of codes are working as expected, but the data is not inserted into the table using code.I am using sql queries. I can enter data manually. I can update and select data from database. But insert is not possible. Could you please help me to find out the reason...?

here is my code:

SqlConnection con = new SqlConnection();
           con.ConnectionString = "Data Source=.\\SQLEXPRESS;AttachDbFilename=|DataDirectory|\\Bill.mdf;Integrated Security=True;User Instance=True";
           SqlCommand cmd = new SqlCommand("insert into tblCustomer values('"+txtName.Text+"','"+txtPhone.Text+"','"+txtMobile.Text+"','"+txtEmail.Text+"','"+sales+"')");
           cmd.Connection = con;
           con.Open();
           cmd.ExecuteNonQuery();
           con.Close();

I didn't get any error message or exception. But the data is not inserted.

Thank you....

Posted 29-Jul-12 5:37am

Neha Thanka

Updated 9-Mar-17 19:28pm

v3

Add a Solution

Comments

OriginalGriff 29-Jul-12 11:43am

Without seeing your code, we really can't tell you much.
Have you used the debugger to ensure that your insert commands are getting executed at all?
Use the "Improve question" widget to edit your question and provide better information.

bbirajdar 29-Jul-12 11:53am

How can we ? If we are not able to see your computer screen and check what code you have written...!!!

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) 29-Jul-12 12:48pm

Please post your codes and say what exception or error message you are getting.

Manoj Kumar Choubey 31-Jul-12 9:55am

Please post full source code of the sub / function without the code we can't help ....

[no name] 23-Sep-14 4:56am

Have you tried debugging? And are you getting any errors?

3 solutions

Solution 1

We need a lot of chance to answer your question exactly; but you should check these suggestions:

1. check your ConnectionString
2. check your CommandText
3. check your Parameters

Best suggestion is following your code by using break points and see they are doing what you want or not.

You want more help, so tell us more about your project.

Posted 29-Jul-12 6:58am

WebMaster

Comments

Zoltán Zörgő 31-Jul-12 12:08pm

Additionally running sql trace would give future information.

Solution 3

SqlConnection con = new SqlConnection();
con.ConnectionString = "Data Source=.\\SQLEXPRESS;AttachDbFilename=|DataDirectory|\\Bill.mdf;Integrated Security=True;User Instance=True";
SqlCommand cmd = new SqlCommand("insert into tblCustomer( add column name with sequnce like fieldname name,phone,which is in database column name) values('"+txtName.Text+"','"+txtPhone.Text+"','"+txtMobile.Text+"','"+txtEmail.Text+"','"+sales+"')");
cmd.Connection = con;
con.Open();
cmd.ExecuteNonQuery();
con.Close();

Posted 23-Aug-14 3:25am

Member 10047413

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Dan Steuer · Accepted Answer · 2012-07-31T07:04:00

Most likely you are inserting if you are not receiving an error. I cannot see your code but I would hope you have done a try/catch to make sure there are no errors.

If there are no errors then the next step is to make sure you really need a user instance. A user instance will not update the master database. It is actually copied to a "local" instance of the database.

To check to see if it is inserting properly you can use a datareader to connect to the database, do the insert and bring back the results. This should confirm the insert statement has done what it is supposed to.

Again, the insert statement in a User Instance will only apply to the user instance NOT the main database.

For more information: Connecting to User Instances[^]