Format of the initialization string does not conform to specification starting at index 0.

Question

1.00/5 (1 vote)

See more:

hi, may i know how to solve this? i was trying to delete specific row from gridview and this occured when i try to delete

C#

SqlConnection myConnection = new SqlConnection("DKGWConnectionString");//it happen on this line
myConnection.Open();
int sql = Convert.ToInt32("Delete from BQ_ShoppingCart" + " where shoppingCartID = @shoppingCartID"); 
SqlCommand cmd = new SqlCommand(sql.ToString(),myConnection); 
cmd.Parameters.AddWithValue("@shoppingCartID", ShoppingCartID);
cmd.CommandType = CommandType.Text;
cmd.ExecuteNonQuery();
myConnection.Close();

Posted 18-Jun-13 20:21pm

NooobieCoder

Updated 18-Jun-13 20:25pm

Prasad Khandekar

v2

Add a Solution

Comments

Thanks7872 19-Jun-13 2:26am

int sql = Convert.ToInt32("Delete from BQ_ShoppingCart" + " where shoppingCartID = @shoppingCartID");
SqlCommand cmd = new SqlCommand(sql.ToString(),myConnection);

Can you explain this line? Why int and string both are there?

NooobieCoder 19-Jun-13 2:28am

my shoppingcartID is int datatype, but the SqlCommand cmd = new SqlCommand(sql.ToString(),myConnection) is where by the (sql has to be string)

Thanks7872 19-Jun-13 6:33am

string sql=("Delete from BQ_ShoppingCart where shoppingCartID = @shoppingCartID");

this wont result in error try it.Avoid conversions wherever its possible.

4 solutions

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)

Christian Graus · Answer 1 · 2013-06-18T20:27:00

The error means what it says, in plain English. If you have a variable called DKGWConnectionString, or a config setting called this, does not change that when you put a string in quotes, it's assumed that it contains an actual connection string. As the error tells you, this is not a valid connection string.

int sql = Convert.ToInt32("Delete from BQ_ShoppingCart" + " where shoppingCartID = @shoppingCartID");

Why string mash this ? And how could this string be converted to an int32 ? This will throw an error, obviously.

OriginalGriff · Answer 2 · 2013-06-18T20:28:00

Solution 2

You can't just pass the name through, you have to read the actual connection string from wherever you have it stored and pass teh content - not the name of the area that holds the content.
An SQL connectionstring will look like this:

Data Source=GRIFFPC\SQLEXPRESS;Initial Catalog=Testing;Integrated Security=True

Posted 18-Jun-13 20:28pm

OriginalGriff

Comments

NooobieCoder 19-Jun-13 2:36am

i change it but now my DAL class having problem
my deleteitem method have error say not all code paths return a value

OriginalGriff 19-Jun-13 3:43am

Looking at your code, I'm not surprised...
There are so many things wrong there, it's difficult to believe you seriously thought that would work.
You need to stop thinking about SQL and data and go right back to teh beginning and look at your datatypes. Do you really think that converting a string to an integer and then back to a string will regenerate the original data? It won't.
If the framework executes the ToInt32 without a runtime error (which it won't in this case) then the ToString call on the number that resulted would give you the string form of a number, not the whole string.

Stop there. Take a deep breath, and think about what you are doing - you should not be trying things like this unless you understand the basics pretty well first - which you clearly don't.

Prasad Khandekar · Answer 3 · 2013-06-18T20:28:00

Solution 3

Hello,

SQL Statement can not be represented by an integer. The variable type should a string. Change your code as shown below.

C#

SqlConnection myConnection = new SqlConnection("DKGWConnectionString");//it happen on this line
myConnection.Open();
string sql = "DELETE FROM BQ_ShoppingCart WHERE shoppingCartID = @shoppingCartID"); 
SqlCommand cmd = new SqlCommand(sql, myConnection);
cmd.CommandType = CommandType.Text;
cmd.Parameters.Add("@shoppingCartID", SqlDbType.Int);
cmd.Parameters["@shoppingCartID"].Value = ShoppingCartID;
cmd.ExecuteNonQuery();
myConnection.Close();

Regards,

Posted 18-Jun-13 20:28pm

Prasad Khandekar

Updated 18-Jun-13 20:40pm

v2

Comments

NooobieCoder 19-Jun-13 2:32am

but my shoppingCartId is int data type
when i change it now my BLL have error

public int DeleteItem(int ShoppingCartID)
{
BQ_DAL dlSc = new BQ_DAL();
return dlSc.DeleteItem(ShoppingCartID);// this line the same error
}

Prasad Khandekar 19-Jun-13 2:41am

Hello,

I have updated the solution. Check it out.

NooobieCoder 19-Jun-13 4:56am

thanks

Masoom Mir · Answer 4 · 2013-06-18T23:25:00

Try this..
connection string is not properly set

C#

SqlConnection myConnection = new SqlConnection("Data Source=GRIFFPC\SQLEXPRESS;Initial Catalog=Testing;Integrated Security=True");//use your connection string here... 

myConnection.Open();
int sql = Convert.ToInt32("Delete from BQ_ShoppingCart  where shoppingCartID = " + ShoppingCartID); 
SqlCommand cmd = new SqlCommand(sql.ToString(),myConnection); 

cmd.CommandType = CommandType.Text;
cmd.ExecuteNonQuery();
myConnection.Close();

no need to use cmd.Parameters

Format of the initialization string does not conform to specification starting at index 0.

4 solutions

Solution 1

Solution 2

Solution 3

Solution 4

Add your solution here

Preview 0