asp.net 数据绑定的实例代码
2019/7/7 18:29:36
本文主要是介绍asp.net 数据绑定的实例代码,对大家解决编程问题具有一定的参考价值,需要的程序猿们随着小编来一起学习吧!
复制代码 代码如下:
public partial class _Default : System.Web.UI.Page
{
protected string title="大家好"; //前台代码<title><%#title %></title>
protected void Page_Load(object sender, EventArgs e)
{
DataSet ds = new DataSet();
string sql = ConfigurationManager.ConnectionStrings["strsql"].ConnectionString;
using (SqlConnection sqlCnn=new SqlConnection(sql))
{
using (SqlCommand sqlCmm=sqlCnn.CreateCommand())
{
sqlCmm.CommandText = "select * from List";
SqlDataAdapter adapter = new SqlDataAdapter(sqlCmm);
adapter.Fill(ds);
}
this.RadioButtonList1.DataSource = ds.Tables[0];
this.RadioButtonList1.DataTextField = "listname";
this.RadioButtonList1.DataValueField = "id";
//this.RadioButtonList1.DataBind();
this.CheckBoxList1.DataSource = ds.Tables[0];
this.CheckBoxList1.DataTextField = "listname";
this.CheckBoxList1.DataValueField = "id";
//this.RadioButtonList1.DataBind();
this.DataBind();
} //数据绑定到RadioButtonList,CheckBoxList
if (!IsPostBack)
{
DataSet ds1 = new DataSet();
using (SqlConnection sqlCnn1 = new SqlConnection(sql))
{
using (SqlCommand sqlCmm1 = sqlCnn1.CreateCommand())
{
sqlCmm1.CommandText = "select provinceid,provincename from Province";
SqlDataAdapter adapter = new SqlDataAdapter(sqlCmm1);
adapter.Fill(ds1);
this.DropDownList1.DataSource = ds1.Tables[0];
this.DropDownList1.DataTextField = "provincename";
this.DropDownList1.DataValueField = "provinceid";
this.DropDownList1.DataBind();
}
}
}
}
protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
{
DataSet ds = new DataSet();
string str = ConfigurationManager.ConnectionStrings["strsql"].ConnectionString;
using (SqlConnection sqlCnn = new SqlConnection(str))
{
using (SqlCommand sqlCmm = sqlCnn.CreateCommand())
{
sqlCmm.CommandText = "select cityid,cityname from City where provinceid='" + this.DropDownList1.SelectedValue + "'";
SqlDataAdapter adapter = new SqlDataAdapter(sqlCmm);
adapter.Fill(ds);
this.DropDownList2.DataSource = ds.Tables[0];
this.DropDownList2.DataTextField = "cityname";
this.DropDownList2.DataValueField = "cityid";
this.DropDownList2.DataBind();
}
}
}//实现省市二级联动
}
这篇关于asp.net 数据绑定的实例代码的文章就介绍到这儿,希望我们推荐的文章对大家有所帮助,也希望大家多多支持为之网!