Set CheckBox "Checked" propery in ASP repeater

Question

I was wondering if it's possible to set the checked propery of a checkbox, using a bool variable form the repeater's datasource?

I've tried several ways but without any success...:

<asp:Repeater ID="rpt" runat="server">
    <itemTemplate> 
       <asp:CheckBox runat="server" CssClass="checkbox"
            Checked="<%#Eval("IsDefault").ToString().ToLower()%>"
            ID="isDefaultCheckBox"/>
    </itemTemplate>
</asp:Repeater>

<asp:Repeater ID="rpt" runat="server">
    <itemTemplate> 
       <asp:CheckBox runat="server" CssClass="checkbox" 
            Checked="<%# DataBinder.Eval(Container.DataItem, "IsDefault")%>" 
            ID="isDefaultCheckBox"/>
    </itemTemplate>
</asp:Repeater>

IsDefault is a field in a class View:

public bool IsDefault

The repeater's DataSource is List.

Have you also tried this: `Checked=''`? – Tim Schmelter Aug 22 '12 at 13:00 — Tim Schmelter, Aug 22 '12 at 13:00
Yes - also doesn't work. – Anton Belev Aug 22 '12 at 13:02 — Anton Belev, Aug 22 '12 at 13:02

score 4 · Accepted Answer · answered Aug 22 '12 at 13:20

Another solution is handling ItemDataBound event:

<asp:Repeater ID="rpt" runat="server" OnItemDataBound="rpt_ItemDataBound">
    <itemTemplate> 
       <asp:CheckBox runat="server" CssClass="checkbox" ID="isDefaultCheckBox"/>
    </itemTemplate>
</asp:Repeater>

...

protected void rpt_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
    RepeaterItem ri = e.Item;
    var dataItem = ri.DataItem as YourClassOrInterface;
    var isDefaultCheckBox = ri.FindControl("isDefaultCheckBox") as CheckBox;
    isDefaultCheckBox.Checked = dataItem.IsDefault;
}

Tim Schmelter · Answer 2 · 2012-08-22T13:08:52.670

3

I'm fairly sure that it should work this way:

Checked='<%# Bind("IsDefault") %>'

By the way, there's a missing < in your first approach:

Checked="%#Eval...

Edit: _{(since you've also edited your question and corrected it)}

Now there's something else wrong, you've two consecutive quotes here:

Checked="<%#Eval("

edited Aug 22 '12 at 13:08

answered Aug 22 '12 at 13:02

Tim Schmelter

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My mistake, while copying the code. With '' still doesn't work. – Anton Belev Aug 22 '12 at 13:04
@looked into an old project, i've used `Bind` there for a checkbox' checked property. See my edited answer. Are you really sure that it's a boolean in the datasource? – Tim Schmelter Aug 22 '12 at 13:09
Yes I'm sure. I dont know why, but still doesn't work in your way. – Anton Belev Aug 22 '12 at 13:36

score 3 · Answer 3 · answered Nov 24 '14 at 20:51

3

Old question, but I solved this in my application using something much simpler:

<asp:CheckBox ID="chkIncludePdf" runat="server" Checked='<%# Eval("DefaultInclude").ToString() == "True" %>' />

answered Nov 24 '14 at 20:51

matthew_360

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score 2 · Answer 4 · answered Aug 21 '13 at 16:24

2

The problem with the code is actually the fact that you are nesting double quotes

Checked="<%# DataBinder.Eval(Container.DataItem, "IsDefault")%>"

should be

Checked='<%# DataBinder.Eval(Container.DataItem, "IsDefault")%>'

answered Aug 21 '13 at 16:24

user2704448

21
1

Set CheckBox "Checked" propery in ASP repeater

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