Data reading with sql datareader

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I want to read data from database using a data reader.
I have a text box and a click button.
When i enter data in the textbox and click search then it should display the data .
How to do it with Datareader and display the in a gridview?

Please help me out..

Posted 13-Jun-13 23:12pm

Jiban jyoti Rana

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[no name] 14-Jun-13 5:26am

What have you tried and where are you stuck?

2 solutions

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Surendra Adhikari SA · Accepted Answer · 2013-06-13T23:53:00

Its better to use DataAdapter to fill a datagridview from database .
Data reader used mostly where we have to fetch and process data row one by one.
i.e.

VB

Dim ConnStr As String= "your connection string"
Dim SConn As System.Data.SqlClient.SqlConnection
Dim SqlStat As String="select * from tableName"
SConn = New System.Data.SqlClient.SqlConnection(ConnStr)
SConn.Open()  'open connection

Using DataAdapter is so simple.

VB

Dim ds As DataSet = New DataSet()
Dim da As System.Data.SqlClient.SqlDataAdapter
da = New System.Data.SqlClient.SqlDataAdapter(SqlStat, SConn)
da.Fill(ds, "myTable")
DatagridView1.DataSource=ds.tables("myTable") 'We candirectly bind dataset to DataGridView.

If you must have to use datareader then
using datareader :

VB

Dim SComm As System.Data.SqlClient.SqlCommand
SComm = New System.Data.SqlClient.SqlCommand(SqlStat, SConn)
Dim reader As SqlDataReader= SComm.ExecuteReader
      'We cannot directly bind DataReader to DataGridView.
Dim table As New DataTable()
table.Load(reader)
DatagridView1.DataSource=table

At Last close connection

VB

SConn.Close()'close connection

yourfriendaks · Accepted Answer · 2013-06-13T23:44:00

Solution 1

C#

sqlconnection con=new seqlconnection("Write Connection String")
sqlCommand cmd=new SqlCommand("Select * from table where columnname like '%"+texbox.text+"'",con)
cmd.con.open();
sqldatareader dr=cmd.ExecuteReader();
dr.read();
datatable dt=new datatable();
dt.Load(dr);
cmd.con.close();
GridView.DataSource=dt;
Gridview.DataBind();

Posted 13-Jun-13 23:44pm

yourfriendaks

Updated 14-Jun-13 1:13am

v4

Comments

VICK 14-Jun-13 5:47am

Is it the solution to your answer or you have posted the problematic code???

yourfriendaks 14-Jun-13 6:05am

No, tell me What U Want That I Write Line By Line Code For U?

yourfriendaks 14-Jun-13 6:06am

u Written That How to read Data Using SqlDatareader that's It