Question

How to read a row from a datareader?

Asked by: sarang8180

I have created a data reader.Iam retrieving records from a specific column from table and showing it on the form.I want to iterate through the datareader and want all the values from that specific column.I want to iterate through each and every row.How to do that?

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Asked On
2008-04-01 at 03:16:38ID23285227
Topics

Visual Studio

,

C# Programming Language

,

SQL Server 2005

Participating Experts
3
Points
500
Comments
3

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Answers

 

by: carl_tawnPosted on 2008-04-01 at 03:26:18ID: 21252581

You simply need a loop calling the Read() method of the datareader. Something like:

    SqlDataReader myReader = "some code to retrieve the reader";
    string value = "";

    while (myReader.Read())
    {
          value = myReader.GetString(0);       // alter to suit the datatype of your column
    }

 

by: oxyooPosted on 2008-04-01 at 03:34:05ID: 21252606

also, sometimes there might be better to use the column name. This
makes your code less prone to errors if you change the column order:

value = myReader["columnname"].ToString();

 

by: prakash_prkPosted on 2008-04-01 at 05:59:06ID: 21253389

try the while loop instead of for loop.

dim myReader as Sqldatareader
dim row as string = ""
 
' myReader = command.ExecuteReader() 'populating reader
 
While(myReader.Read())
    row = row + "," myReader.GetString(0);
End While
                                              
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