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 Posted by projectid2007 on 02/22/07 15:19 
Hi, 
I'm using VS2005 and I'm trying to link the C# windows form to MSSQL. 
I used BindingNavigator Control to read the data. After that I add 
sqlcommand and sqldataadapter to send the data to the database. My 
code is this 
 
sqlDataAdapter1. InsertCommand. CommandText = 
"INSERT INTO SUDENT (" + 
"S_ID, S_NAME, S_ADDRESS, S_PHONE" + 
") VALUES ('" + 
S_IDComboBox. Text + "', '" + 
S_NAMETextBox. Text + "', '" + 
S_ADDRESSTextBox. Text + "', '" + 
S_PHONETextBox. Text + "')"; 
 
sqlDataAdapter1. InsertCommand. ExecuteNonQuery( ); 
 
It gave me this error 
"NulleferenceExcept ion was Unhandled"and " Object refrence not set to 
an instance of an object" so I add this line 
 
sqlCommand1 = ("INSERT INTO STUDENT (S_ID,S_NAME, S_ADDRESS, S_PHONE) 
VALUES (@S_ID,@S_NAME, @S_ADDRESS, @S_PHONE) " ,sqlConnection1) ; 
 
Then it gave me some stupid error. By the way it didn't make a new 
object of SqlCommand although I tired .... 
 
So can u help me to solve my problem ? Thank you
 
  
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