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Javascript confirm in a gridview on a hyperlink field

Posted on 2009-04-12
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Last Modified: 2012-05-06
I would like to ask someone, "Are you sure you want to delete this record?", from my gridview.

Right now I am using a hyperlink field so that I could use an image for the delete button.

I have tried a RowDataBound event adding attributes to the desired field, but that is generating a compile error saying, "Compiler Error Message: BC30545: Property access must assign to the property or use its value."
CODE FOR THE GRIDVIEW:

    <asp:GridView ID="GridViewJobListing" runat="server" AutoGenerateColumns="False" 

        BackColor="#000099" BorderStyle="Double" DataSourceID="JobSummary" 

        ForeColor="#FF9933" GridLines="None" HorizontalAlign="Center" 

        Width="600px" DataKeyNames="JobID" BorderColor="#999966" BorderWidth="6px" 

        AllowPaging="True" AllowSorting="True" PagerSettings-PageButtonCount="20" 

            HeaderStyle-Wrap="False" HeaderStyle-HorizontalAlign="Center" PageSize="20">

    <PagerSettings PageButtonCount="20"></PagerSettings>
 

        <RowStyle HorizontalAlign="Center" VerticalAlign="Middle" />

        <Columns>

            <asp:BoundField DataField="JobTitle" HeaderText="Job Title" SortExpression="JobTitle" />

            <asp:BoundField DataField="JobStartDate" HeaderText="Start Date" SortExpression="JobStartDate" />

            <asp:BoundField DataField="DateJobAdded" HeaderText="Date Added" SortExpression="DateJobAdded" DataFormatString = "{0:d}" />

            <asp:BoundField DataField="DateLastModified" HeaderText="Modified" SortExpression="DateLastModified" DataFormatString = "{0:d}" />

            <asp:BoundField DataField="Status" HeaderText="Status" SortExpression="Status" />

            <asp:HyperLinkField DataNavigateUrlFormatString="~/EmployerEditJobWizard.aspx?JobID={0}" DataNavigateUrlFields="JobID" Text="<img src='graphics/edit.gif' alt='Edit Job' title='Edit Job' border='2' />" /> 

            <asp:HyperLinkField DataNavigateUrlFormatString="~/EmployerJobsEdit.aspx?JobID={0}&Action=Activate" DataNavigateUrlFields="JobID" Text="<img src='graphics/activate.gif' alt='Activate' title='Activate' border='2' />" /> 

            <asp:HyperLinkField DataNavigateUrlFormatString="~/EmployerJobsEdit.aspx?JobID={0}&Action=Deactivate" DataNavigateUrlFields="JobID" Text="<img src='graphics/deactivate.gif' alt='Deactivate' title='Deactivate' border='2' />" /> 

            <asp:HyperLinkField DataNavigateUrlFormatString="~/EmployerJobsEdit.aspx?JobID={0}&Action=Delete" DataNavigateUrlFields="JobID" Text="<img src='graphics/delete.gif' alt='Delete Job' title='Delete Job' border='2' />" /> 

            <asp:BoundField DataField="Expr1" HeaderText="Expr1" SortExpression="Expr1"  Visible="False" />

            <asp:BoundField DataField="JobID" HeaderText="JobID" InsertVisible="False" ReadOnly="True" SortExpression="JobID"  Visible="False" />

            <asp:BoundField DataField="EmpID" HeaderText="EmpID" SortExpression="EmpID"  Visible="False" />

        </Columns>

        <SelectedRowStyle BackColor="#FFCC66" ForeColor="#000066" />

        <HeaderStyle BackColor="#999966" ForeColor="#000099" HorizontalAlign="Center" 

            BorderColor="#CC6600" BorderStyle="Solid" BorderWidth="5px" />

        <AlternatingRowStyle BackColor="#003399" />

    </asp:GridView>
 
 

CODE FOR THE DATABOUND EVENT:

    Protected Sub GridViewJobListing_RowDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles GridViewJobListing.RowDataBound

        e.Row.Cells[8].Attributes.Add("onclick", "return confirm('Are you sure you want to delete this record?');")

    End Sub

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Question by:spaceneedlejumper
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9 Comments
 
LVL 14

Assisted Solution

by:GiftsonDJohn
GiftsonDJohn earned 100 total points
ID: 24128409
Hi There,

If you have to just ask generic "Are you sure you want to delete this record?" it is not required to use any server events. Just add OnClientClick attribute on the HyperLink control.

<asp:HyperLinkField DataNavigateUrlFormatString="~/EmployerJobsEdit.aspx?JobID={0}&Action=Delete" DataNavigateUrlFields="JobID" Text="<img src='graphics/delete.gif' alt='Delete Job' title='Delete Job' border='2' />" OnClientClick="return confirm('Are you sure you want to delete this record?');" />
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Author Comment

by:spaceneedlejumper
ID: 24128441
I tried that last night and again just now to be sure.  It generates the error:

Parser Error Message: Type 'System.Web.UI.WebControls.HyperLinkField' does not have a public property named 'onClientClick'.

Can't I do some sort of Gridview.Attributes.Add(OnClientClick) in the PageLoad  -  I know that syntax is wrong, but maybe you know what I'm talking about.
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LVL 6

Assisted Solution

by:havj123
havj123 earned 100 total points
ID: 24128659
It works. Try again

<asp:HyperLink OnClientClick="return confirm('Are you sure?');" ID="DeleteLink" runat="server" NavigateUrl='<%# DataBinder.Eval(Container.DataItem, "ImageId","ViewProperty.aspx?PropertyId="+Request.QueryString("PropertyId")+"&ImageId={0}") %>'  >Delete</asp:HyperLink>
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LVL 6

Expert Comment

by:havj123
ID: 24128663
take hyperlink control instead of HyperLinkField
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LVL 22

Accepted Solution

by:
prairiedog earned 300 total points
ID: 24131413
You are using C# style in VB code. Change it to:
e.Row.Cells(8).Controls(0).Attributes.Add("onclick", "return confirm('Are you sure you want to delete this record?');")
 
 
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LVL 22

Expert Comment

by:prairiedog
ID: 24131668
Wait a second, is it a duplicate question? If yes, then it is against the member agreemnet to post duplicate question.
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Author Comment

by:spaceneedlejumper
ID: 24131807
Sorry prairiedog,

It does look like both of my questions kind of merged into the same thing.  The way the deleting operation works right now is by using a hyperlink field in the gridview that passes a querystring with the job ID and an action=delete.

I'd just like to get a warning in there somewhere.  I would be happy if I could get the warning either on the page showing the gridview when the user clicks delete, or during the pageload event of the page processing the querystring.

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LVL 22

Expert Comment

by:prairiedog
ID: 24131849
Try the comment I post on the other question.
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Author Closing Comment

by:spaceneedlejumper
ID: 31569344
I didn't get this working with any of the solutions offered.  I posted a new question about how to get the JobID into a URL querystring so that I can confirm and then delete based on the incoming querystring.
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