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Editable GridView in ASP.NET 2.0

, 26 Nov 2012
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This article will give you an overview of how to use an ASP.NET GridView completely, and how to use RowEditing, RowUpdating, RowDeleting, RowCommand, RowDataBound, RowCancelingEdit, and Pagination in a DataGrid. From this article, you will have a clear view of GridView data inserting, deleting, and

EditableGridView

Introduction

This article will give you an overview of how to use an asp:GridView completely, and how to use RowEditing, RowUpdating, RowDeleting, RowCommand, RowDataBound, RowCancelingEdit, and Pagination in a DataGrid. From this article, you will have a clear view of the GridView data insert, delete, and update operations.

Background

GridView is a very popular control in ASP.NET, and for website development, it is a very important control. This control is especially important for CRUD operations.

Using the code

Make two tables in a database: Contact and ContactType. This is just an example of how we shall add, edit, and delete data in a GridView. I have also used a textbox, a drop down list, and a checkbox which we use in the case of data add, delete, and update.

Step by step

Take a web project, go to an .aspx page, for example, Default.aspx, and add an ASP.NET GridView:

<asp:GridView ID="grdContact" runat="server" 
 AutoGenerateColumns="False" DataKeyNames="Id, Type" 
 OnRowCancelingEdit="grdContact_RowCancelingEdit" 
 OnRowDataBound="grdContact_RowDataBound" 
 OnRowEditing="grdContact_RowEditing" 
 OnRowUpdating="grdContact_RowUpdating" ShowFooter="True" 
 OnRowCommand="grdContact_RowCommand" 
 OnRowDeleting="grdContact_RowDeleting">

This is the GridView with all the necessary properties enabled and the events called.

For every column of the GridView, we need to make an <asp:TemplateField> field. I am using an <EditItemTemplate> to put the edit control, an <ItemTemplate> to bind data in a control, and a <FooterTemplate> to insert the control. Here is an example of a template field:

<asp:TemplateField HeaderText="Name" HeaderStyle-HorizontalAlign="Left"> 
   <EditItemTemplate> 
    <asp:TextBox ID="txtName" runat="server" Text='<%# Bind("Name") %>'></asp:TextBox> 
   </EditItemTemplate> 
   <FooterTemplate> 
    <asp:TextBox ID="txtNewName" runat="server" ></asp:TextBox> 
   </FooterTemplate> 
   <ItemTemplate> 
    <asp:Label ID="lblName" runat="server" Text='<%# Bind("Name") %>'></asp:Label> 
   </ItemTemplate>
</asp:TemplateField>

Editable_GridView/Editable_GridView2.png

Let's take a look at the code for the GridView:

  1. Initialize the GridView: To fill data in the GridView, I have written a method named FillGrid() which takes data from a DataTable and shows it in the grid.
        public void FillGrid()
        {
            ContactTableAdapter contact = new ContactTableAdapter();
            DataTable contacts = contact.GetData();        
            if (contacts.Rows.Count > 0)
            {
                grdContact.DataSource = contacts;
                grdContact.DataBind();
            }
            else
            {
                contacts.Rows.Add(contacts.NewRow());
                grdContact.DataSource = contacts;
                grdContact.DataBind();
    
                int TotalColumns = grdContact.Rows[0].Cells.Count;
                grdContact.Rows[0].Cells.Clear();
                grdContact.Rows[0].Cells.Add(new TableCell());
                grdContact.Rows[0].Cells[0].ColumnSpan = TotalColumns;
                grdContact.Rows[0].Cells[0].Text = "No Record Found";
            }
        }
  2. Fill dynamic values: There are two dropdownlist controls available in this example. One of the dropdownlists dynamically loads data from another table. In the RowDataBound event of the GridView control, insert the following code:
        protected void grdContact_RowDataBound(object sender, GridViewRowEventArgs e)
        {
            ContactTypeTableAdapter contactType = new ContactTypeTableAdapter();
            DataTable contactTypes = contactType.GetData();
            if (e.Row.RowType == DataControlRowType.DataRow)
            {
                Label lblType = (Label)e.Row.FindControl("lblType");
                if (lblType != null)
                {
                    int typeId = Convert.ToInt32(lblType.Text);
                    lblType.Text = (string)contactType.GetTypeById(typeId);
                }
                DropDownList cmbType = (DropDownList)e.Row.FindControl("cmbType");
                if (cmbType != null)
                {   
                    cmbType.DataSource = contactTypes;
                    cmbType.DataTextField = "TypeName";
                    cmbType.DataValueField = "Id";
                    cmbType.DataBind();
                    cmbType.SelectedValue = 
                      grdContact.DataKeys[e.Row.RowIndex].Values[1].ToString();
                }
            }
            if (e.Row.RowType == DataControlRowType.Footer)
            {
                DropDownList cmbNewType = (DropDownList)e.Row.FindControl("cmbNewType");
                cmbNewType.DataSource = contactTypes;
                cmbNewType.DataBind();
            }
        }
  3. Insert data: I have initialized the GridView control with the DataTable, and also have some values filled in the footer dropdownlist, cmbNewType. Except Id, I have put FooterTemplate for every column because all the field are available. Clicking on "Insert" will enter data in your database table.
    protected void grdContact_RowCommand(object sender, GridViewCommandEventArgs e)
    {
        ContactTableAdapter contact = new ContactTableAdapter();
        bool flag= false;
        if (e.CommandName.Equals("Insert"))
        {
            TextBox txtNewName = 
              (TextBox)grdContact.FooterRow.FindControl("txtNewName");
            CheckBox chkNewActive = 
              (CheckBox)grdContact.FooterRow.FindControl("chkNewActive");
            DropDownList cmbNewType = 
              (DropDownList)grdContact.FooterRow.FindControl("cmbNewType");
            DropDownList ddlNewSex = 
              (DropDownList)grdContact.FooterRow.FindControl("ddlNewSex");
            if (chkNewActive.Checked) flag = true; else flag = false;
            contact.Insert(txtNewName.Text, ddlNewSex.SelectedValue, 
                           cmbNewType.SelectedValue, flag);
            FillGrid();
        }
    }
  4. Update data: In the case of data update, we do the same things as the insert. In the case of insert, I always took the footer row, but in the case of update, I take the current RowIndex or the selected RowIndex. Click on Edit first, then call RowEditing, then the update and cancel options come.
    protected void grdContact_RowUpdating(object sender, GridViewUpdateEventArgs e)
    {
        ContactTableAdapter contact = new ContactTableAdapter();
        bool flag = false;
        Label lblId = (Label)grdContact.Rows[e.RowIndex].FindControl("lblId");
        TextBox txtName = (TextBox)grdContact.Rows[e.RowIndex].FindControl("txtName");
        CheckBox chkActive = 
          (CheckBox)grdContact.Rows[e.RowIndex].FindControl("chkActive");
        DropDownList cmbType = 
          (DropDownList)grdContact.Rows[e.RowIndex].FindControl("cmbType");
        DropDownList ddlSex = 
          (DropDownList)grdContact.Rows[e.RowIndex].FindControl("ddlSex");
        if (chkActive.Checked) flag = true; else flag = false;
        contact.Update(txtName.Text, ddlSex.SelectedValue, 
                       cmbType.SelectedValue, flag,Convert.ToInt32(lblId.Text));
        grdContact.EditIndex = -1;
        FillGrid();
        
    }
    protected void grdContact_RowEditing(object sender, GridViewEditEventArgs e)
    {
        grdContact.EditIndex = e.NewEditIndex;
        FillGrid();
    }
    protected void grdContact_RowCancelingEdit(object sender, 
                              GridViewCancelEditEventArgs e)
    {
        grdContact.EditIndex = -1;
        FillGrid();
    }
  5. Deleting data: Now, you may need to delete data. The GridView calls RowDeleting for the delete event.
    protected void grdContact_RowDeleting(object sender, GridViewDeleteEventArgs e)
    {
        ContactTableAdapter contact = new ContactTableAdapter();
        int id = Convert.ToInt32(grdContact.DataKeys[e.RowIndex].Values[0].ToString());
        contact.Delete(id);
        FillGrid();
    }

Points of Interest

So, now you have a DatGrid that is editable? Do you want to use CSS to give an excellent look of your grid? Just go to this link for a GridView CSS.

Happy coding Smile | :)

History

I was working on an admin panel in one of my projects, and saw that I needed many add, delete, and update operations for that panel. Now, I can easily solve that problem without a lot of programming by using an editable GridView. Smile | :)

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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About the Author

Ashrafur Rahaman
Software Developer (Senior)
Canada Canada
Software engineer with broad experience in enterprise application development, product deployment automation, software test & test automation, application & system management, and manage big projects and team using proven agile technologies.
 
Passionate on Microsoft technologies, developed solutions using C#, .net (1.1/2.0/3.5/4), SQL Server (2005/2008). Work on Powershell, SSRS, SSIS, WPF, Ajax, WCF, JQuery.
 
Develop innovative application with cutting edge technologies always boosting inside.

Comments and Discussions

 
Questioncan you implement a search function also in the editable gridview? PinmemberMember 1087227030-Jun-14 21:39 
QuestionTestDatabaseTableAdapters PinmemberMember 1073960011-Apr-14 0:51 
QuestionExcellent Article PinmemberMember 100532324-Mar-14 22:31 
QuestionWell done! +5 Pinmemberkmoorevs13-Jan-14 14:11 
Generalthanks PinmemberMember 968194519-Oct-13 4:11 
GeneralMy vote of 5 Pinmembersyed210925-Sep-13 0:58 
QuestionWhat the? PinmemberMember 102499753-Sep-13 10:21 
QuestionVisual Studio 2012 version? Pinmemberangwal27-Jun-13 5:23 
GeneralMy vote of 2 PinmemberAbhijeet Patil19-May-13 1:27 
GeneralRe: My vote of 2 PinprofessionalRohan Leuva27-Aug-13 2:50 
GeneralMy vote of 3 PinmemberMember 99584925-Apr-13 13:54 
GeneralMy vote of 5 PinmemberMenon Santosh27-Mar-13 20:31 
Question.Problem accessing xsd PinmemberDimaz Janu19-Mar-13 16:44 
QuestionShowing 5 Errors PinmemberGirish_Sharma16-Mar-13 1:31 
QuestionHide Insert option PinmemberGirish_Sharma14-Mar-13 19:42 
AnswerRe: Hide Insert option PinmemberAshrafur Rahaman15-Mar-13 5:13 
GeneralRe: Hide Insert option PinmemberGirish_Sharma16-Mar-13 1:33 
QuestionDefinition of ContactTypeTableAdapter PinmemberVineesh Madhavan28-Feb-13 0:01 
QuestionNeed advice PinmemberDimaz Janu26-Feb-13 17:22 
AnswerRe: Need advice PinmemberAshrafur Rahaman3-Mar-13 4:14 
GeneralRe: Need advice PinmemberDimaz Janu4-Mar-13 13:46 
GeneralMy vote of 5 PinmemberDimaz Janu26-Feb-13 17:08 
QuestionThank you Ashrafur - this was very helpful PinmemberGinger Decker25-Feb-13 10:26 
GeneralMy vote of 5 PinmemberVarun Sareen10-Dec-12 18:30 
My vote of 5 goes because of the detailing the article provides.
GeneralMy vote of 3 PinmemberMd. Humayun Rashed26-Nov-12 4:42 
Questionnice:) PinmemberAshwin78626-Sep-12 21:44 
GeneralMy vote of 5 Pinmembersaikiranmai4-Sep-12 21:29 
QuestionEdit update Delete in Gridview Pinmemberjigs080817-Aug-12 5:29 
QuestionGood Pinmemberpadma777.vathi29-Jul-12 21:15 
GeneralMy vote of 3 Pinmemberpadma777.vathi29-Jul-12 21:12 
GeneralLimited select query and XSD file Pinmembermaxgo17-Jul-12 10:52 
GeneralTwo footers? [modified] Pinmembershawnperolis12-Jul-12 4:50 
GeneralRe: Two footers? Pinmembershawnperolis17-Jul-12 4:18 
GeneralMy vote of 4 Pinmemberdippaul31-May-12 0:04 
GeneralMy vote of 1 PinmemberDestiny7777-May-12 15:16 
GeneralMy vote of 5 PinmemberLSADev2-May-12 9:37 
QuestionCan you post the SQL DB Creation Script for the Database used for this Article ? PinmemberMuzaffar Ali Rana5-Apr-12 8:21 
AnswerRe: Can you post the SQL DB Creation Script for the Database used for this Article ? PinmemberMuhammad Owais Qureshi2-Jun-12 9:37 
QuestionEdit event is not firing on one click Pinmembersupermario ballotelli20-Mar-12 19:46 
QuestionThe type or namespace name 'TestDatabaseTableAdapters' could not be found PinmemberJustin Greene12-Mar-12 3:33 
BugRe: The type or namespace name 'TestDatabaseTableAdapters' could not be found [modified] PinmemberDestiny7777-May-12 15:13 
GeneralMy vote of 2 PinmemberAlexander M. Batishchev22-Dec-11 9:59 
GeneralRe: My vote of 2 PinmemberShemeer NS4-Jul-12 3:43 
QuestionGood Work PinmemberSachin Dubey13-Sep-11 22:53 
GeneralMy vote of 4 PinmemberUday Kumar B R11-Aug-11 1:01 
QuestionHi Pinmemberariel_alava7-Jul-11 23:13 
GeneralMy vote of 5 PinmemberMember 327776020-May-11 4:03 
GeneralMy vote of 1 Pinmembervikas dumbre11-May-11 3:18 
GeneralInvalid Object name 'Contact' PinmemberRayH10664-May-11 22:33 
GeneralAbout ContactTableAdapter Pinmembermanjeet_2426-Apr-11 0:04 

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