What is dataset and tell about its features. What are equivalent methods of previous, next etc. Of ADO in ADO.NET ?

1 Answers   Digital GlobalSoft,

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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 is difference between entity framework and ado.net?

0 Answers  

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How do you sort the data in datagrid?

4 Answers   Choice Solutions,

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Define table relations?

0 Answers  

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What is partial class?

0 Answers  

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Which type of database is used while processing dynamic database?

1 Answers   Microsoft,

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Explain the ADO . Net Architecture ( .Net Data Provider) ?

2 Answers  

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List all the steps in order, to access a database through ado.net?

0 Answers  

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Difference between function and trigger?

1 Answers   HCL,

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What is data adapter in ado.net with example?

0 Answers  

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What is ado in agriculture?

0 Answers  

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