Give few examples of datareader that is used in different dataproviders.

0 Answers  

---

What is concurrency? How will you avoid concurrency when dealing with dataset? (One user deleted one row after that another user through his dataset was trying to update same row. What will happen? How will you avoid the problem?)

0 Answers  

---

What is Dataset Object?

0 Answers  

---

What is the difference between executenonquery () and executescalar ()?

0 Answers  

---

How To Update A Column In A DataGrid Using C#.NET? I am getting InvalidCastException as (Specified cast is not valid) while updating 2nd column in a datagrid? Id,firstname,lastname are the three columns of my datagrid respectively. I wanted to edit the second column(lastname) and update it. I did the following code in DataGrid's updatecommand(),but failed to update ! Int varid=(int)DataGrid1.DataKeys[e.Item.ItemIndex]; TextBox lnm=(TextBox)e.Item.Cells[2].Controls[0]; string str=lnm.Text ; SqlCommand cmd=new SqlCommand("update customer set lastname='" + str + "' where id=" + varid + "",con); cmd.ExecuteNonQuery(); DataGrid1.EditItemIndex=- 1; DataGrid1.DataBind();

2 Answers   Mind Tree, TCS,

---

What are advantages and disadvantages of Microsoft-provided data provider classes in ADO.NET?

2 Answers  

---

Can we create Synonymns in MS Acess,My Sql Server,Sql Server? But iam we can create in oracle!

0 Answers  

---

Define Execute Scalar?

0 Answers   UGC Corporation,

---

Which is faster sqldataadapter and sqldatareader?

0 Answers  

---

Advantage of ADO.Net?

2 Answers   QualSoft, TCS,

---

Difference between OLEDB Provider and SqlClient ?

2 Answers  

---

How do we use stored procedure in ADO.NET and how do we provide parameters to the stored procedures?

0 Answers   SwanSoft Technologies,

---