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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