invalid quantity specification negative quantity are not allowed for this item please check this item definition quantity

2233

I have written the code as below. here problem is that dt remain null. how to solve thst please tell me. public partial class Form1 : Form { private DataTable DTable; private DataRow drow; public Form1() { InitializeComponent(); } private OleDbConnection getConnection() { OleDbConnection con=new OleDbConnection (@"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\Documents and Settings\Administrator\My Documents\Visual Studio 2008\Projects\winApp for Student\winApp for Student\App_Data\SchooMgnSystem.mdb;Persist Security Info=True"); return con; } private void button1_Click(object sender, EventArgs e) { InsertData(); } private void InsertData() { if (DTable==null) { DTable = new DataTable(); DTable.Columns.Add("StudID", typeof(string)); DTable.Columns.Add("StudName", typeof (string)); DTable.Columns.Add("Address", typeof(string)); drow = DTable.NewRow(); drow[0] = txtStudID.Text; drow[1] = txtSTudName.Text; drow[2] = txtAddress.Text; DTable.Rows.Add(drow); grdStudent.DataSource = DTable; } else { drow = DTable.NewRow(); drow[0] = txtStudID.Text; drow[1] = txtSTudName.Text; drow[2] = txtAddress.Text; DTable.Rows.Add(drow); grdStudent.DataSource = DTable; } } private void button2_Click(object sender, EventArgs e) { string cmdstr; OleDbCommand cmd; OleDbConnection con = getConnection(); foreach (DataRow Drow in DTable.Rows) { cmdstr = "Insert into Student values('" + drow[0].ToString() + "','" + drow[1].ToString() + "','"+drow [2].ToString()+"')"; cmd = new OleDbCommand(cmdstr,con); try { con.Open(); cmd.ExecuteNonQuery(); } catch (Exception ex) { MessageBox.Show(ex.Message); } finally { con.Close(); } } }

1545

ORA-26030: index string.string had string partitions made unusable due to:

1041

RMAN-05017: no copy of datafile number found to recover

1146

ORA-26095: unprocessed stream data exists

1931

what is the instrument that used in Mechanical Energy??

1725

ORA-16516: The current state is invalid for the attempted operation.

5962

What is Mutex error in Triggers?

1608

how can i get the question papers of year 2006 and 2007 of 12th commerce gujarat board

1324

What is SCD (Slowly Changing Dimensions)? What are its types?

1314

How to solve -805 error i.e. Bind issue. There are two conditions- 1) If you have access to the database table 2) If you don't have access to the table

1558

today's peformance is less than yesturday.it took 1 mint and today's performance is 7 mints.guys can anyone answer to mu question in sql

1334

What is the use of NOLOCK locking hint?

716

In my project I am using star schema and only diimension tables are loaded and not fact tables any one can help me why it is happening? Plase guide me.

1772

When i am connect database through toad,one error occured. ORA-12514: TNS:listener does not currently know of service requested in connect descriptor. plz help me thanks advance.............

1708