DropDownList、RadioButtonList和CheckBoxList数据绑定
时间:2011-05-24 来源:十一月
一、DropDownList:
1、选项值保存到数据库:
Hashtable ht=new Hashtable();//这里用Hashtable
ht.Add("字段名",DropDownListID.SelectedItem.Text.ToString());//保存选项Text
ht.Add("字段名",DropDownListID.SelectedItem.Value.ToString());//保存选项Value
2、选项值由数据库绑定到DropDownList:
首先DropDownListID.ClearSelection();//清除选项
DropDownListID.Items.FindByText(dr["字段名"].ToString()).Selected = true;//选项Text
DropDownListID.Items.FindByValue(dr["字段名"].ToString()).Selected = true;//选项Value
二、RadioButtonList:
1、选项值保存到数据库(同DropDownList):
Hashtable ht=new Hashtable();//这里用Hashtable
ht.Add("字段名",RadioButtonListID.SelectedItem.Text.ToString());//保存选项Text
ht.Add("字段名",RadioButtonListID.SelectedItem.Value.ToString());//保存选项Value
2、选项值由数据库绑定到RadioButtonList
string SelectItem = dr["字段名"].ToString();//将数据库中的选项值从DataRow中读出赋给变量SelectItem
for (int i = 0; i < RadioButtonListID.Items.Count; i++)
{//用for循环判断那项被选种
if (RadioButtonListID.Items[i].Text == SelectItem)RadioButtonListID.Items[i].Selected = true;
}
三、CheckBoxList:
1、选项值保存到数据库
string SelectItem = "";//声明一个变量来接受选项
for (int i = 0; i < CheckBoxListID.Items.Count; i++)
{//用for循环将所有选项用","隔开连接起来
if (CheckBoxListID.Items[i].Selected)
{
SelectItem = SelectItem + CheckBoxListID.Items[i].Value + ",";//选项后加","隔开
}
}
ht.Add("字段名",SelectItem.ToString());
2、选项值由数据库绑定到CheckBoxList
string SelectItem = dr["字段名"].ToString();
string[] arrStr = SelectItem.Split(',');//字段是以","隔开
foreach (string str in arrStr)
{
for (int i = 0; i <CheckBoxListID.Items.Count; i++)
{
if (this.CheckBoxListID.Items[i].Value == str)
{
this.CheckBoxListID.Items[i].Selected = true;
}
}
}