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How can you clear a Data from all the table in the dataset?

Posted By :Narayanan     Posted Date :January 14, 2012    Points :40   Category :ADO.Net 
using Dataset.Clear() method you can clear all the data from DataSet

You can also find related Interview Question to How can you clear a Data from all the table in the dataset?  below: 

What is the difference between Data Reader & Dataset?

  
Data Reader is connected datasource, read only, forward only record set.

Dataset is disconnected datatsource resides in memory database that can store multiple tables, relations and constraints; (More...)

You are working with a DataSet and want to be able to display data, sorted different ways. How do you do so?

  
Select the correct answer.

1. Use the Sort method on the DataTable object.
2. Use the DataSet object's Sort method.
3. Use a DataView object for each sort.
4. Create a DataTable for each sort, using the DataTable object's Copy method, and then Sort the result


Correct Answer is :
3. Use a DataView object for each sort. (More...)

Explain the steps involved to populate dataset with data?

  
Open connection.;
Initialize Adapter passing SQL and connection as parameter.;
Initialize Dataset.;
Call Fill method of the adapter passes dataset as the parameter.;
Close connection.; (More...)

Is it possible to have tables in the dataset that are not bound to any data source?

  
Yes, I can create table object in code and add it to the dataset. (More...)

How to fill DataSet with data?

  
To fill DataSet with data we have to use Fill() method of DataAdapter object.

Fill() has several overloads. But the simple one is
[CODE]Fill(DataSet, DataTable)[/CODE]
The first parameter will take the name of the dataset to be filled and the second parameter specifies the name of the DataTable in the DataSet which will contain the data. (More...)

In How many ways Data can be Export from Sql Table to Excel Sheet?

  
Some of these options include
1) Data Transformation Services (DTS),
2) SQL Server Integration Services (SSIS)
3) Bulk Copy (BCP)
4)OPENROWSET() (More...)

List commands to copy data from one table to another?

  
-Insert into select
-Select into

are the two commands to copy data from one table to another. (More...)

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