can we have multiple datatables in a datareader ?

18 Answers   Fulcrum Logic, Infosys, Kale Consultants, Ness Technologies,

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What is variable view?

0 Answers  

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What is a serialized object?

0 Answers  

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What are dataproviders?

0 Answers  

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How do you find the count of records in a dataset?

0 Answers  

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What are the differences between OLEDB and SQLClient Providers?

0 Answers  

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Explain the basic use of "dataview" and explain its methods.

0 Answers  

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Describe ado.net object model in detail.

0 Answers  

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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,

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What are basic methods of dataadapter?

0 Answers  

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What are the three Ado objects?

6 Answers   Microsoft, StarSoft,

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I loaded the dataset with a table of 10 records. One of the records is deleted from the backend, how do you check whether all the 10 records were present while updating the data(which event and steps) and throw the exception 28 can datareader hold data from multiple tables?

0 Answers  

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