Asp.net CheckBoxList control
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This document discusses the CheckBoxList control in ASP.NET. It notes that CheckBoxList is a collection of ListItem objects that can have items added through HTML or code behind. Important properties of CheckBoxList are described, including RepeatColumns to specify number of columns, SelectedIndex to get index of selected item, and SelectedValue to return value of selected item. The document provides an example of adding items to a CheckBoxList through HTML.
Asp.net CheckBoxList control
- 1. ASP.NET CheckBoxList Control Department of Computer WEB – GRADE 5 Lecturer. OMEED M. M Lecture 8
- 2. CheckBoxList Control • CheckBoxList is collection of ListItem objects. How we can add items to the checkboxlist? • Items can be added to the CheckBoxList in the HTML source or in the code behind file. 4/6/2022 Mr.Omeed M. M 2
- 3. Important Properties of the CheckBox Control 4/6/2022 Mr.Omeed M. M 3 This is CheckBoxList This is collection of single CheckBox
- 4. Adding items through HTML source 4/6/2022 Mr.Omeed M. M 4 <asp:CheckBoxList ID="checkboxListEducation" runat="server" RepeatDirection="Horizontal"> <asp:ListItem Text="Diploma" Value="1"></asp:ListItem> <asp:ListItem Text="Graduate" Value="2"></asp:ListItem> <asp:ListItem Text="Post Graduate" Value="3"></asp:ListItem> <asp:ListItem Text="Doctrate" Value="4"></asp:ListItem> </asp:CheckBoxList> <br /> <asp:Button ID="Button1" runat="server" Text="Button" onclick="Button1_Click" />
- 5. Important Properties of the CheckBox Control 4/6/2022 Mr.Omeed M. M 5 RepeatColumns property specifies the number of columns used to lay out the items. SelectedIndex property of the CheckBoxList control can also be used to get the index of the selected item in the checkboxlist. But this property, returns only one selected item, and that too, the item with the lowest index. SelectedIndex property returns -1, if nothing is selected. SelectedValue property returns the selected Item's value, but only for one selected item. If no item is selected this property returns empty string.
- 6. Any Questions? 4/6/2022 6 MR. OMEED M. MOHAMMED