单选框:RadioButton
GroupName:组名,如果要实现单选效果每个单选按钮的组名必须一样
是否被选中 RadioButton.checked
单选按钮列表:RadioButtonList
属性:RepeatDirection:Vertical上下 Honizontal左右
绑定数据源:
DataClassesDataContext context = new DataClassesDataContext();
RadioButtonList1.DataSource = context.Nation;
RadioButtonList1.DataValueField = "Code";
RadioButtonList1.DataTextField = "Name";
RadioButtonList1.DataBind();
取选中项的值:
RadioButtonList1.SelectedValue.ToString();
设置哪一项被选中:
RadioButtonList1.SelectedIndex=;
复选框:CheckBox
是否被选中 CheckBox1.checked
复选框列表:CheckBoxList
属性:RepeatDirection:Vertical上下 Honizontal左右
绑定数据:
CheckBoxList1.DataSource = context.Nation;
CheckBoxList1.DataValueField = "Code";
CheckBoxList1.DataTextField = "Name";
CheckBoxList1.DataBind();
取选中项的值:
foreach (ListItem item in CheckBoxList1.Items)
{
if (item.Selected)
{
Label1.Text += item.Text;
}
}
设置哪一项被选中:
如果是一项选中:SelectedIndex=;
如果是多想选中:
foreach (ListItem item in CheckBoxList1.Items)
{
if (item.Text == "汉族" || item.Text == "满族")
{
item.Selected = true;
}
}
练习:
全选: foreach (ListItem item in CheckBoxList1.Items)
{
item.Selected = CheckBox1.Checked;
}
弹窗:
string zhi="";
foreach (ListItem item in CheckBoxList1.Items)
{
if (item.Selected)
{
zhi += item.Value.ToString()+",";
}
}
//去掉最后多余的逗号
zhi = zhi.Substring(, zhi.Length - );
//拆分字符串
string[] codes;
codes = zhi.Split(',');
//造JS代码
string js = "<script type='text/javascript'>";
for (int i = ; i < codes.Length; i++)
{
js += "alert('" + codes[i] + "');";
}
js += "</script>";
Literal1.Text = js;
//Literal1.Text = "<script type='text/javascript'>alert('" + zhi + "')</script>";