How to Bind, Edit, Update, Paging and Delete in FormView control in Asp.net?

Introduction: In this post I will explain you how to bind, edit, delete and update the FormView data control in Asp.net.

Description:

I have created a table name STUDENT_DETAIL.

STUDENT_ID	int
STUDENT_NAME	varchar(50)
STUDENT_ADDRESS	varchar(50)
STUDENT_CLASS	varchar(50)

STUDENT_ID is primary key.

Now open the Visual Studio>Go to File>New>Website. Add the Connectionstring in web.config file of website.

<configuration>

       <connectionStrings>

    <add name="connection" connectionString="Data Source=SYS-1F78031ED0A;Initial Catalog=TestBlog;Integrated Security=True"/>

       </connectionStrings>

       <system.web>

        <compilation debug="true" targetFramework="4.0" />

    </system.web>

</configuration>

After that add new web form to website, drag and drop the FormView Data control from Toolbox.

<asp:FormView ID="formviewstudent" runat="server" DataKeyNames="STUDENT_ID" AllowPaging="True"

            onpageindexchanging="formviewstudent_PageIndexChanging"

            onitemupdating="formviewstudent_ItemUpdating"

            onitemdeleting="formviewstudent_ItemDeleting"

            onmodechanging="formviewstudent_ModeChanging"

           >

             <FooterStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />

        <RowStyle BackColor="#EFF3FB" />

        <PagerStyle BackColor="#2461BF" ForeColor="White" HorizontalAlign="Center" />

        <HeaderStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />

            <ItemTemplate>

            <table style="border:1px solid #c1c1c1;">

            <tr style="background-color:#E5E5FE;font-weight:bold"><td>Student Detail</td></tr>

        

              <tr> <td><b>Student Name:-</b></td><td><asp:Label ID="lblstudentname" runat="server" Text='<%# Eval("STUDENT_NAME") %>'></asp:Label></td></tr>

              

              <tr><td><b>Student Address:-</b></td><td><asp:Label ID="lblstudentaddress" runat="server" Text='<%# Eval("STUDENT_ADDRESS") %>'></asp:Label></td></tr>

              

              <tr><td><b>Student Class:-</b></td><td><asp:Label ID="lblstudentclass" runat="server" Text='<%# Eval("STUDENT_CLASS") %>'></asp:Label></td></tr>

             <tr><td> <asp:LinkButton ID="LinkButton1" runat="server" CommandName="edit">Edit</asp:LinkButton>

                <asp:LinkButton ID="LinkButton2" runat="server" CommandName="delete">Delete</asp:LinkButton></td></tr>

                </table>

            </ItemTemplate>

            <EditItemTemplate>

            <table>

            <tr><td><b>Student Name:-</b></td><td><asp:TextBox ID="txtstudentname" runat="server" Text='<%# Eval("STUDENT_NAME") %>'></asp:TextBox></td></tr>

             <tr><td><b>Student Address:-</b></td><td><asp:TextBox ID="txtstudentaddress" runat="server" Text='<%# Eval("STUDENT_ADDRESS") %>'></asp:TextBox></td></tr>

              <tr><td><b>Student Class:-</b></td><td><asp:TextBox ID="txtstudentclass" runat="server" Text='<%# Eval("STUDENT_CLASS") %>'></asp:TextBox></td></tr>

              <tr><td><asp:LinkButton ID="lkupdate" runat="server" CommandName="update">Update</asp:LinkButton>

             

                <asp:LinkButton ID="lkcancel" runat="server" CommandName="cancel">Cancel</asp:LinkButton></td></tr>

            </table>

            </EditItemTemplate>

            <EmptyDataTemplate>

            <table style="border:1px solid #c1c1c1;">

            <tr style="background-color:#E5E5FE;font-weight:bold"><td><b>Student Details</b></td></tr>

            <tr><td><b>Student Name:-</b></td><td style="color:Red;">No Records Aviable!</td></tr>

            <tr><td><b>Student Address:-</b></td><td style="color:Red;">No Records Aviable!</td></tr>

            <tr><td><b>Student Class:-</b></td><td style="color:Red;">No Records Aviable!</td></tr>

           

            </table>

            </EmptyDataTemplate>

        </asp:FormView>

   

After that go to .aspx.cs page and add namespace.

using System.Data;

using System.Data.SqlClient;

using System.Configuration;

SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["connection"].ToString());

    protected void Page_Load(object sender, EventArgs e)

    {

        if (con.State == ConnectionState.Closed)

            con.Open();

        if (!IsPostBack)

        {

            Bindformview();

        }

    }

    public void Bindformview()

    {

        try

        {

            SqlDataAdapter adp = new SqlDataAdapter("Select * from STUDENT_DETAIL", con);

            DataTable dt = new DataTable();

            adp.Fill(dt);

            if (dt.Rows.Count > 0)

            {

                formviewstudent.DataSource = dt;

                formviewstudent.DataBind();

            }

            else

            {

                formviewstudent.DataSource = null;

                formviewstudent.DataBind();

            }

        }

        catch (Exception ex)

        {

        }

    }

    protected void formviewstudent_PageIndexChanging(object sender, FormViewPageEventArgs e)

    {

        formviewstudent.PageIndex = e.NewPageIndex;

        Bindformview();

    }

    protected void formviewstudent_ItemUpdating(object sender, FormViewUpdateEventArgs e)

    {

        try

        {

            DataKey key = formviewstudent.DataKey;

            TextBox txtname = (TextBox)formviewstudent.FindControl("txtstudentname");

            TextBox txtaddress = (TextBox)formviewstudent.FindControl("txtstudentaddress");

            TextBox txtclass = (TextBox)formviewstudent.FindControl("txtstudentclass");

            string Update = "Update STUDENT_DETAIL set STUDENT_NAME='" + txtname.Text.ToString() + "',STUDENT_ADDRESS='" + txtaddress.Text.ToString() + "',STUDENT_CLASS='" + txtclass.Text.ToString() + "' where STUDENT_ID=" + key.Value.ToString();

            SqlCommand cmd = new SqlCommand(Update, con);

            cmd.ExecuteNonQuery();

            Messagebox("Record Update Successfully");

            formviewstudent.ChangeMode(FormViewMode.ReadOnly);

            Bindformview();

        }

        catch (Exception ex)

        {

        }

    }

    protected void formviewstudent_ModeChanging(object sender, FormViewModeEventArgs e)

    {

        formviewstudent.ChangeMode(e.NewMode);

        Bindformview();

      

    }

    protected void formviewstudent_ItemDeleting(object sender, FormViewDeleteEventArgs e)

    {

        try

        {

          

            DataKey key = formviewstudent.DataKey;

            SqlCommand cmd = new SqlCommand();

            cmd.Connection = con;

            cmd.CommandText = "delete from STUDENT_DETAIL where STUDENT_ID='" + key.Value.ToString() + "'";

                  cmd.ExecuteNonQuery();

            Messagebox("Delete Record Successfully");

            formviewstudent.ChangeMode(FormViewMode.ReadOnly);

            Bindformview();

        }

        catch (Exception ex)

        {

        }

    }

    //To show message

    private void Messagebox(string Message)

    {

        Label lblMessageBox = new Label();

        lblMessageBox.Text =

            "<script language='javascript'>" + Environment.NewLine +

            "window.alert('" + Message + "')</script>";

        Page.Controls.Add(lblMessageBox);

    }

In VB:

Go to .aspx.vb page and add namespace.

Imports System.Data

Imports System.Data.SqlClient

Imports System.Configuration

Dim con As New SqlConnection(ConfigurationManager.ConnectionStrings("connection").ToString())

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

        If con.State = ConnectionState.Closed Then

            con.Open()

        End If

        If Not IsPostBack Then

            Bindformview()

        End If

    End Sub

    Public Sub Bindformview()

        Try

            Dim adp As New SqlDataAdapter("Select * from STUDENT_DETAIL", con)

            Dim dt As New DataTable()

            adp.Fill(dt)

            If dt.Rows.Count > 0 Then

                formviewstudent.DataSource = dt

                formviewstudent.DataBind()

            Else

                formviewstudent.DataSource = Nothing

                formviewstudent.DataBind()

            End If

        Catch ex As Exception

        End Try

    End Sub

    Protected Sub formviewstudent_PageIndexChanging(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.FormViewPageEventArgs) Handles formviewstudent.PageIndexChanging

        formviewstudent.PageIndex = e.NewPageIndex

        Bindformview()

    End Sub

    Protected Sub formviewstudent_ItemUpdating(ByVal sender As Object, ByVal e As FormViewUpdateEventArgs)

        Try

            Dim key As DataKey = formviewstudent.DataKey

            Dim txtname As TextBox = DirectCast(formviewstudent.FindControl("txtstudentname"), TextBox)

            Dim txtaddress As TextBox = DirectCast(formviewstudent.FindControl("txtstudentaddress"), TextBox)

            Dim txtclass As TextBox = DirectCast(formviewstudent.FindControl("txtstudentclass"), TextBox)

            Dim Update As String = "Update STUDENT_DETAIL set STUDENT_NAME='" & txtname.Text.ToString() & "',STUDENT_ADDRESS='" & txtaddress.Text.ToString() & "',STUDENT_CLASS='" & txtclass.Text.ToString() & "' where STUDENT_ID=" & key.Value.ToString()

            Dim cmd As New SqlCommand(Update, con)

            cmd.ExecuteNonQuery()

            Messagebox("Record Update Successfully")

            formviewstudent.ChangeMode(FormViewMode.[ReadOnly])

            Bindformview()

        Catch ex As Exception

        End Try

    End Sub

    Protected Sub formviewstudent_ModeChanging(ByVal sender As Object, ByVal e As FormViewModeEventArgs)

        formviewstudent.ChangeMode(e.NewMode)

        Bindformview()

    End Sub

    Protected Sub formviewstudent_ItemDeleting(ByVal sender As Object, ByVal e As FormViewDeleteEventArgs)

        Try

            Dim key As DataKey = formviewstudent.DataKey

            Dim cmd As New SqlCommand()

            cmd.Connection = con

            cmd.CommandText = "delete from STUDENT_DETAIL where STUDENT_ID='" & key.Value.ToString() & "'"

                     cmd.ExecuteNonQuery()

            Messagebox("Delete Record Successfully")

            formviewstudent.ChangeMode(FormViewMode.[ReadOnly])

            Bindformview()

        Catch ex As Exception

        End Try

    End Sub

    'To show message

    Private Sub Messagebox(ByVal Message As String)

        Dim lblMessageBox As New Label()

        lblMessageBox.Text = "<script language='javascript'>" + Environment.NewLine & "window.alert('" & Message & "')</script>"

        Page.Controls.Add(lblMessageBox)

    End Sub

Now debug the project and check the result.

Related Articles on Formview:

Ø   How to Bind Formview Data control in Asp.netusing Store Procedure?

Ø  How to Bind Formview control using Sqldataadapter,Datatable and Query in Asp.net?

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