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(); } } }

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Answers for Complete This Song B_C_A_A _IL K_A KA_E, S__AN J__E B__D_ J__E

3229

what are the test cases for ticket vending machine?

4285

a pleasant evening. i would like to ask a question about yellow journalism. This is another term for sensationalism right? i just wanted to know a lot of articles or studies with regards to the effect this yellow journalism could effect the interpretation of the students,especially college students who are taking Communication course. please help me answer this.

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I am Recording the QTP Script..the Script is below VbWindow("mdiPP").VbWindow("frmPOSOLocking").ActiveX ("SSTab").VbListView("lstPO").SetItemState "272 [10-11]", micChecked. After when when Run then give error property not found.

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ORA-16626: failed to enable specified object

2225

if the lengths of two wires are same and the area of cross sections is 4:7 then what will be the ratio of current passing through these wires

2708

How to resolve QSM-01108 error. I have no OR conditions in my query, but do have 9 IN conditions. The error says the max limit is 2 while I have 257 number of disjuncts. However, if I remove even a single IN condition, the query is rewritten. I cannot change my query. How can I resolve this issue?

2723

ORA-26095: unprocessed stream data exists

3586

ORA-26094: stream format error: input column overflow

2816

For pH-4 calculation it is subtracted from the previous pH7 buffer value is the same procedure to be followed for calculation of remaining buffers??

1633

hi, i am trying to do modular test tree in winrunner but i am getting error like "Error in the Expression list",can you please tell e what kind of error is this? thanks.

2363

according to class7 how can we give description on pendrive?

2503

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

2671

ORA-07497: sdpri: cannot create trace file 'string'; errno = string.

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