禁用和检查存储在C＃数据库中的`CheckBoxList`的值

Question

I have added in an form in aspx page this CheckBoxList :

<asp:CheckBoxList ID="Fruits" runat="server">
    <asp:ListItem Text="Mango" Value="1" />
    <asp:ListItem Text="Apple" Value="2" />
    <asp:ListItem Text="Banana" Value="3" />
    <asp:ListItem Text="Guava" Value="4" />
    <asp:ListItem Text="Orange" Value="5" />
</asp:CheckBoxList>

In this CheckBoxList it's possible select multiple values, eg :

And this values are memorized in field of database table:

for (int i = 0; i < Fruits.Items.Count; i++)
{
    if (Fruits.Items[i].Selected == true)
    {
        FruitsUpdate += Fruits.Items[i].Text.ToString() + ";";
    }
}

Value memorized in database : 1;4;5;

Now in aspx form page I need disable and checked the values of CheckBoxList memorized in database, but I have tried this code without success because all ListItem are disabled but not checked.

FruitsDB = dr["Fruits"].ToString();

if (FruitsDB.ToString() != "")
{
    Fruits.Text = FruitsDB.ToString();
    Fruits.Enabled = false;
}
else
{
    Fruits.Enabled = true;
}

I need disable and checked in the CheckBoxList the items with value 1 and 4 and 5.

Please help me, thank you in advance.

Answer 1

You didn't set the Selected property of the list item where you set the Enabled property.

Here is the code. You will iterate over CheckBoxList. if current checkbox's value is in FruitsDB then it will be selected and disabled.

    var memory = FruitsDB.ToString();

    foreach (ListItem item in Fruits.Items)
    {
        if (memory.Contains(item.Value))
        {
            item.Enabled = false;
            item.Selected = true;
        }
    }