How to bind gridview using DataReader, SqlCommand and query in Asp.net ~ Asp.Net,C#.Net,VB.Net,MVC,jQuery,JavaScipt,AJAX,WCF,Sql Server example

Introduction: In previous articles i explained How to bind gridview using DataReader, SqlCommand and Stored procedure in Asp.net and How to Bind DataList using SqlDataAdapter and DataTable in asp.net (C#,VB.Net) and Highlight gridview row on mouse over using CSS in asp.net.
There are a number of ways to bind data in GridView control in asp.net. In this article i will explain how to bind data in GridView using DataReader, SqlCommand and inline query in Asp.net

Click on image to enlarge

Create a Database e.g. "MyDataBase" and a table under that DataBase in Sql Server and name it "EMPLOYEE" as shown in figure:

Click on image to enlarge

Note: EMP_ID column is set to Primary key and Identity specification is set to yes with Identity increment and Identity seed equal to 1. Insert some data in this table that you want to show in the Gridview.

Now in web.config file add the connectionstring under <configuration> tag :

Add a GridView control in design page of your asp.net website under <BODY> tag

<legend>Gridview Binding Example</legend>

<asp:GridView ID="EmpGridView" runat="server" AutoGenerateColumns="False" CellPadding="4" ForeColor="#333333" GridLines="None">

<asp:BoundField DataField="EMP_NAME" HeaderText="Name" />

<asp:BoundField DataField="DEPT" HeaderText="Department" />

<asp:BoundField DataField="SALARY" HeaderText="Salary" />

</Columns>

</asp:GridView>

</fieldset>

In the code behind file(.aspx.cs) of your asp.net website write the code as:

C#.Net Code to bind gridview using DataReader, SqlCommand and query

First include the following namespaces

using System.Data;

using System.Data.SqlClient;

using System.Configuration;

then write code as:

protected void Page_Load(object sender, EventArgs e)

{

if (!IsPostBack)

{

BindEmpGrid();

}

private void BindEmpGrid()

{

SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["EmpCon"].ConnectionString);

DataSet ds = new DataSet();

try

{

SqlCommand cmd = new SqlCommand("SELECT * FROM EMPLOYEE", con);

con.Open();

SqlDataReader dr = cmd.ExecuteReader();

if (dr.HasRows)

{

EmpGridView.DataSource = dr;

EmpGridView.DataBind();

}

else

{

EmpGridView.DataSource=null;

EmpGridView.DataBind();

}

catch(Exception ex)

{

Response.Write("Error Occured: " + ex.ToString());

}

finally

{

con.Close();

}

VB.Net Code to bind gridview using DataReader, SqlCommand and query

First import the following namespaces

Imports System.Data

Imports System.Data.SqlClient

Imports System.Configuration

then write code as:

Protected Sub Page_Load(sender As Object, e As EventArgs)

If Not IsPostBack Then

BindEmpGrid()

End If

End Sub

Private Sub BindEmpGrid()

Dim con As New SqlConnection(ConfigurationManager.ConnectionStrings("EmpCon").ConnectionString)

Dim ds As New DataSet()

Try

Dim cmd As New SqlCommand("SELECT * FROM EMPLOYEE", con)

con.Open()

Dim dr As SqlDataReader = cmd.ExecuteReader()

If dr.HasRows Then

EmpGridView.DataSource = dr

EmpGridView.DataBind()

Else

EmpGridView.DataSource = Nothing

EmpGridView.DataBind()

End If

Catch ex As Exception

Response.Write("Error Occured: " & ex.ToString())

Finally

con.Close()

End Try

End Sub

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How to bind gridview using DataReader, SqlCommand and query in Asp.net

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