Make Sure All Check boxs are Checked in Gridview

I have a gridview that in the last column has a checkbox column(chkLiveDiscussed).    The number of rows in the gridview could be anything between 2 to 20

I have a checkbox outside of the grid view(chkAllDiscussed) that i ONLY want enabled when all of the rows i the gridview have the checkbox(chkLiveDiscussed) checked.  How can I achieve this?

   <asp:GridView ID="gvLiveLearners" runat="server" DataSourceID="dsLiveLeaners" AutoGenerateColumns="False" CssClass="tableAc" DataKeyNames="PROGRESS_RAG" BorderColor="#B2CB96" BorderStyle="Dotted" BorderWidth="1px">
                        <Columns>
                            <asp:BoundField DataField="FULLNAME" HeaderText="FULLNAME" SortExpression="FULLNAME" />
                            <asp:BoundField DataField="SECTOR" HeaderText="Route" SortExpression="SECTOR" />
                            <asp:BoundField DataField="SCHEME" HeaderText="Level" SortExpression="SCHEME" />
                            <asp:BoundField DataField="LATEST_REVIEW" HeaderText="Last Review" ReadOnly="True" SortExpression="LATEST_REVIEW" DataFormatString="{0:d}" />
                            <asp:BoundField DataField="AptStartTime" HeaderText="Next Review" SortExpression="AptStartTime" DataFormatString="{0:d}" />
                            <asp:BoundField DataField="NextAptWith" HeaderText="NextAptWith" ReadOnly="True" SortExpression="NextAptWith" Visible="False" />
                            <asp:BoundField DataField="NUM_REVIEWS" HeaderText="Num Reviews" ReadOnly="True" SortExpression="NUM_REVIEWS" HeaderStyle-CssClass="hidden" ItemStyle-CssClass="hidden" />
                            <asp:BoundField DataField="MonthOnPOT" HeaderText="MonthOnPOT" ReadOnly="True" SortExpression="MonthOnPOT" />
                            <asp:BoundField DataField="MonthsOnProgramme" HeaderText="Months on Program" ReadOnly="True" SortExpression="MonthsOnProgramme" />
                            <asp:BoundField DataField="EARLIEST_START_DATE" HeaderText="EARLIEST_START_DATE" ReadOnly="True" SortExpression="EARLIEST_START_DATE" DataFormatString="{0:d}" Visible="False" />
                            <asp:BoundField DataField="POTSTATUS" HeaderText="POTSTATUS" SortExpression="POTSTATUS" />
                            <asp:BoundField DataField="PROGRESS_RAG" HeaderText="PROGRESS_RAG" ReadOnly="True" SortExpression="PROGRESS_RAG" >
<HeaderStyle CssClass="hidden"></HeaderStyle>

<ItemStyle CssClass="hidden"></ItemStyle>
                            </asp:BoundField>
                            <asp:BoundField DataField="CURRENT_PDM" HeaderText="CURRENT_PDM" SortExpression="CURRENT_PDM" />
                            <asp:BoundField DataField="CONTRACT" HeaderText="CONTRACT" SortExpression="CONTRACT" Visible="False" />
                            <asp:BoundField DataField="TRAINEEID" HeaderText="TRAINEEID" ReadOnly="True" SortExpression="TRAINEEID" Visible="False" />
                            <asp:BoundField DataField="POT" HeaderText="POT" ReadOnly="True" SortExpression="POT" Visible="False" />
                            <asp:BoundField DataField="POTSTATUSID" HeaderText="POTSTATUSID" SortExpression="POTSTATUSID" Visible="False" />
                            <asp:TemplateField HeaderText="Discussed">
                              
                                <ItemTemplate>
                                    <asp:CheckBox ID="chkLiveDiscussed" runat="server" />
                                </ItemTemplate>
                            </asp:TemplateField>
                        </Columns>
                        <EmptyDataTemplate>
                   
                           <span class="auto-style5">There are no live learners at this branch</span>
                        </EmptyDataTemplate>
                        <HeaderStyle BackColor="#AEC785" BorderColor="Black" BorderStyle="Solid" BorderWidth="1px" HorizontalAlign="Center" VerticalAlign="Middle" />
                        <RowStyle BorderStyle="Dashed" BorderWidth="1px" HorizontalAlign="Center" VerticalAlign="Middle" />
                    </asp:GridView>   <asp:CheckBox ID="chkAllDiscussed" Enabled="False"  runat="server" />

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Thanks
EdAsked:
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Prakash SamariyaIT ProfessionalCommented:
0
Kyle AbrahamsSenior .Net DeveloperCommented:
This expert suggested creating a Gigs project.
add an javascript checked changed to your checkbox pointing at this function.

function check_changed()
{
  var allChecked = true;
    $('#<%= gvLiveLearners.ClientID%>').find('tr').each(function () {
        var row = $(this);
        if (!row.find('input[type="checkbox"]').is(':checked'){
                  allchecked =false;
                   return false;
        }
    });
   alert(allChecked);
}
    

    

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Please disregard the gigs recommendation, was clicked on accident.
0
it_saigeDeveloperCommented:
Another solution:

Default.aspx -
<%@ Page Title="Home Page" Language="VB" AutoEventWireup="true" CodeBehind="Default.aspx.vb" Inherits="EE_Q28964699._Default" %>

<form id="form1" runat="server">
	<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False">
		<Columns>
			<asp:BoundField DataField="ID" HeaderText="ID" />
			<asp:BoundField DataField="FullName" HeaderText="Full Name" />
			<asp:BoundField DataField="Age" HeaderText="Age" />
			<asp:TemplateField HeaderText="Is Working?">
				<ItemTemplate>
					<asp:CheckBox ID="CheckBox2" runat="server" Checked='<%#DataBinder.GetPropertyValue(Container.DataItem, "IsWorking")%>' OnCheckedChanged="OnCheckedChanged" AutoPostBack="True" />
				</ItemTemplate>
			</asp:TemplateField>
		</Columns>
	</asp:GridView>
	<asp:CheckBox ID="CheckBox1" runat="server" Text="All Persons Working?" />
</form>

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Default.aspx.vb -
Public Class _Default
	Inherits Page

	Protected Sub OnLoad(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
		If Not Page.IsPostBack Then
			GridView1.DataSource = (From i In Enumerable.Range(0, 20) Select New Person() With {.ID = i, .FirstName = String.Format("FirstName{0}", i), .MiddleName = String.Format("MiddleNmae{0}", i), .LastName = String.Format("LastName{0}", i), .Birthdate = DateTime.Now.AddYears(-(9 * i)), .IsWorking = i Mod 2 = 0}).ToList()
			GridView1.DataBind()
		End If
	End Sub

	Protected Sub OnCheckedChanged(sender As Object, e As EventArgs)
		If GridView1 IsNot Nothing AndAlso GridView1.Rows.Count > 0 Then
			CheckBox1.Checked = GridView1.Rows.Cast(Of GridViewRow).Where(Function(r) CType(r.Cells(3).FindControl("CheckBox2"), CheckBox).Checked).Count = GridView1.Rows.Count
		End If
	End Sub
End Class

<Serializable()> _
Class Person
	Public Property ID() As Integer
	Public Property FirstName() As String
	Public Property MiddleName() As String
	Public Property LastName() As String
	Public Property Birthdate() As DateTime
	Public Property IsWorking() As Boolean

	Public ReadOnly Property FullName() As String
		Get
			Return String.Format("{0} {1}. {2}", FirstName, MiddleName.First(), LastName)
		End Get
	End Property

	Public ReadOnly Property Age() As String
		Get
			Return String.Format("{0} years old", DateTime.Now.Year - Birthdate.Year)
		End Get
	End Property
End Class

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Default.aspx.designer.vb -
'------------------------------------------------------------------------------
' <auto-generated>
'     This code was generated by a tool.
'
'     Changes to this file may cause incorrect behavior and will be lost if
'     the code is regenerated. 
' </auto-generated>
'------------------------------------------------------------------------------

Option Strict On
Option Explicit On


Partial Public Class _Default

	'''<summary>
	'''form1 control.
	'''</summary>
	'''<remarks>
	'''Auto-generated field.
	'''To modify move field declaration from designer file to code-behind file.
	'''</remarks>
	Protected WithEvents form1 As Global.System.Web.UI.HtmlControls.HtmlForm

	'''<summary>
	'''GridView1 control.
	'''</summary>
	'''<remarks>
	'''Auto-generated field.
	'''To modify move field declaration from designer file to code-behind file.
	'''</remarks>
	Protected WithEvents GridView1 As Global.System.Web.UI.WebControls.GridView

	'''<summary>
	'''CheckBox1 control.
	'''</summary>
	'''<remarks>
	'''Auto-generated field.
	'''To modify move field declaration from designer file to code-behind file.
	'''</remarks>
	Protected WithEvents CheckBox1 As Global.System.Web.UI.WebControls.CheckBox
End Class

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Produces the following output -

Initial load:Capture.JPGAfter checking all IsWorking checkboxes:Capture.JPGAfter unchecking one of the previously selected checkboxes:Capture.JPG
-saige-
0

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EdAuthor Commented:
Perfect Solution
0
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