Question

Trying to prepopulate checkbox list control

Asked by: jazzcatone

I have the following checkboxlist control:
<asp:CheckBoxList ID="chbxlstType"  CssClass="lbltextblcksmbld" RepeatDirection="horizontal"  runat="server">
                <asp:ListItem  Text="AE" Value="0"></asp:ListItem>
                <asp:ListItem  Text="C" Value="0"></asp:ListItem>
                <asp:ListItem  Text="NPQ" Value="0"></asp:ListItem>
                </asp:CheckBoxList>
The user will go in and check various check boxes and submit their selections to the databases. In the insert to the db we are building a string of values and inserting them into 1 varchar field. Like so:
        foreach (ListItem liType in chbxlstType.Items)
        {
            if (liType.Selected)
            {
                strTypelist += liType.Value + ",";
            }
        }
So for example, if all 3 listitems were checked and then submitted the value in the db ends up being (0,0,0). Or if for example only the first and third listitems were selected the value in the db would be (0,,0).
So now when the user comes back to the form and i need the listitems to be prepopulated with the selections the user made previously. So i need to do sometype of a comparison against the db value and check the appropriate boxes accordingly. Any suggestions as to the best way to do it in C#?

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Asked On
2009-04-28 at 07:56:31ID24361980
Topics

C# Builder

,

C# Programming Language

,

WebApplications

Participating Experts
1
Points
500
Comments
1

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Answers

 

by: ChronJobPosted on 2009-04-28 at 08:06:56ID: 24251570

You probably want something like this. 

private string getValue()
{
        foreach (ListItem liType in chbxlstType.Items)
        {
            if (liType.Selected)
            {
                strTypelist += liType.Value;
            }
            strTypelist += ",";
        }
        //trim off last comma
        strTypelist = strTypelist.substring(0,strTypelist.Length -1); 
        return strTypelist;
}
 
private void populateCheckboxes(string commaSeporatedValues)
{
       String[] valueArray = commaSeporatedValues.Split(',');
       int i = 0;
        foreach (ListItem liType in chbxlstType.Items)
        {
               liType.selected = valueArray[i].equals("0");
               i++;
        }
}

                                              
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