Asp. NET WebForm Component CheckBoxList programming (4)

Last Update:2017-02-28 Source: Internet

Author: User

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Asp.net|web| programming Five. The source code (check.aspx) and the execution interface:

The following figure is the resulting interface after executing the source code (check.aspx):

Check.aspx source code is as follows:

<% @ Page Language = "C #"%>

<title > CheckBoxList component Demo Program </title
<script runat = "server" >
protected void Button_Click (object sender, EventArgs e)
{
The placement of text and Marquee in the check box in the component
Switch (cboalign. SelectedIndex)
{
Case 0:
Chklist. TextAlign = TextAlign. Left;
break;
Case 1:
Chklist. TextAlign = TextAlign. right;
break;
}

Each check box layout in a component
Switch (cborepeatlayout. SelectedIndex)
{
Case 0:
Chklist. RepeatLayout = RepeatLayout. Table;
break;
Case 1:
Chklist. RepeatLayout = RepeatLayout. flow;
break;
}

Arrange direction for each check box in a component
Switch (cborepeatdirection. SelectedIndex)
{
Case 0:
Chklist. RepeatDirection = RepeatDirection. Vertical;
break;
Case 1:
Chklist. RepeatDirection = RepeatDirection. Horizontal;
break;
}

Number of rows to arrange for each check box in the component
Try
{
int cols = Int. Parse (Txtrepeatcols.text);
Chklist. RepeatColumns = cols;
}
catch (Exception)
{
}

Lblresult. Text = "";
for (int i = 0; I chklist. Items. Count; i++)
{
if (chklist. Items [i]. Selected)
{
Lblresult. Text + chklist. Items [i]. Text + "<BR >";
}
}
}
</script >
<body >
<form runat = "server" >

<table >
<TR >
<TD > text arrangement position in component: </TD >
<TD >
<asp:dropdownlist id = cboalign runat = "server" >
<asp:listitem > Ju Zuo </asp:listitem
<asp:listitem > right </asp:listitem >
</asp:dropdownlist >
</TD >
</TR >
<TR >
<TD > Individual item layouts in components: </TD >
<TD >
<asp:dropdownlist id = cborepeatlayout runat = "server" >
<asp:listitem > table-type </asp:listitem >
<asp:listitem > compact </asp:listitem >
</asp:dropdownlist >
</TD >
</TR >
<TR >
<td> the items in the component are arranged in the direction: </TD >
<TD >
<asp:dropdownlist id = cborepeatdirection runat = "server" >
<asp:listitem > horizontal direction </asp:listitem >
<asp:listitem > vertical direction </asp:listitem >
</asp:dropdownlist >
</TD >
</TR >
<TR >
<TD > Number of items in the component line: </TD >
<TD > <asp:textbox id = "Txtrepeatcols" runat = "server"/> </td
</TR >
</table >
<BR >
Please select the type of computer language you need to learn:
<BR >
<asp:checkboxlist id = "Chklist" RepeatDirection = horizontal runat = "server" >
<asp:listitem > Visual C + +. Net </asp:listitem >
<asp:listitem > Visual C # </asp:listitem >
<asp:listitem > vb.net </asp:listitem >
<asp:listitem > JScript.NET </asp:listitem >
<asp:listitem > Visual J # </asp:listitem
</asp:checkboxlist >
<BR >
<asp:button Text = "submit" runat = "server" onclick = "Button_Click"/>

<asp:label id = lblresult runat = "server"/>
</form >
</body >

Six Summarize:

In fact, the CheckBoxList component is also a server-side component. This article describes some of the major properties and methods in the CheckBoxList component, And through a more typical example of how to do with the CheckBoxList component in the ASP.net page programming, in fact, for another important component--checkbox, they have a lot of similarities, mastered the use of CheckBoxList components of the general control of the CH The use of Eckbox components.

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

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