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ADO.NET Interview Questions
Questions Answers Views Company eMail

what is data access layer?

Honeywell,

2 8555

What is the default view of Data Grid?

TCS,

5 14839

what is Sql Native Client?

Gantec Solutions,

5 18721

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();

Mind Tree, TCS,

2 16176

what is the syntax code for oldb to connect oracle?

 2 5108

what is execute scalar?

Atharva Infotech, Dohatec New Media, Make eIT, Protech,

11 24592

what is Execute NOn Query?

Infosys, Protech, Sars Systems, SwanSoft Technologies,

29 68468

what is the syntax code for oldb to connect oracle

IBM,

3 6445

what is the syntax code to oledb to connect oracle

IBM,

6 11786

When we are running the Application, if any errors occur in the Stored Procedure then how will the server identify the errors?

HCL,

5 11637

how do u connect ado.net to sql server

Microsystems,

1 5877

how to keep track of index in listbox items.

 2 5707

How do we invoke queries from the application

 2 4578

Why sql Data Reader object not created

Matrix,

9 22086

what is the criteria of selection in sbi interview?

BCS, State Bank Of India SBI,

1 4854

Post New ADO.NET Questions

Un-Answered Questions { ADO.NET }

What is aggregating data ?

960

What is the difference between oledb sql server and oledbdotnet provider?

1010

What is difference between ado.net and asp net?

1038

What are datareaders?

974

What is the difference between Dataset. clone and Dataset.copy?

1044

How do you update a dataset in ado.net and how do you update database through dataset?

926

How to work with disconnected data - the dataset and sqldataadapter?

982

how Sequence to connect and retrieve data from database using dataset?

1293

Define different execute methods of ADO.NET command object ?

1086

Which control of the BindingNavigator returns the current position within the data source?

1165

Which object holds only data and does not interact with data source?

982

Which is faster sqldataadapter and sqldatareader?

919

In how many ways we can retrieve table records count? How to find the count of records in a dataset?

1005

What does ole stand for in excel?

1141

What are the essential features of ado.net?

949

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