DataList控制元件的使用
阿新 • • 發佈：2019-01-04
<%@ Page Language="C#"%><%@ Import Namespace="System.Data.SqlClient"%><script runat=server>void Page_Load(Object sender , EventArgs e)
{
if (! IsPostBack ) {
BindDataList();
}
}
void BindDataList() {
SqlConnection conn;
SqlCommand cmd;
SqlDataReader dr;
conn =new SqlConnection("Server=localhost; Database=Pubs;uid=cdd;psw=123
cmd =new SqlCommand( "Select au_id, au_lname, phone From Authors Order by au_lname", conn );
conn.Open();
dr = cmd.ExecuteReader();
DataList1.DataSource = dr;
DataList1.DataBind();
dr.Close();
conn.Close();
}
void DataList1_EditCommand( object s, DataListCommandEventArgs e ) {
DataList1.EditItemIndex
BindDataList();
}
void DataList1_CancelCommand( object s, DataListCommandEventArgs e ) {
DataList1.EditItemIndex =-1;
BindDataList();
}
void DataList1_DeleteCommand( object s, DataListCommandEventArgs e ) {
SqlConnection conn;
string strDelete;
SqlCommand cmdDelete;
string strAuthorID;
strAuthorID
conn =new SqlConnection("Server=localhost; Database=Pubs;uid=cdd;psw=123" );
strDelete ="Delete Authors Where [email protected]";
cmdDelete =new SqlCommand( strDelete, conn );
cmdDelete.Parameters.Add( "@authorID", strAuthorID );
conn.Open();
cmdDelete.ExecuteNonQuery();
conn.Close();
DataList1.EditItemIndex =-1;
BindDataList();
}
void DataList1_UpdateCommand( object s, DataListCommandEventArgs e ) {
SqlConnection conn;
string strUpdate;
SqlCommand cmdUpdate;
string strAuthorID;
strAuthorID = DataList1.DataKeys[(int)e.Item.ItemIndex].ToString();
TextBox txtLastName = (TextBox)e.Item.FindControl( "txtLastName" );
TextBox txtPhone = (TextBox)e.Item.FindControl( "txtPhone" );
conn =new SqlConnection("Server=localhost; Database=Pubs;uid=cdd;psw=123" );
strUpdate ="Update Authors set [email protected], [email protected] Where [email protected]";
cmdUpdate =new SqlCommand( strUpdate, conn );
cmdUpdate.Parameters.Add( "@authorID", strAuthorID );
cmdUpdate.Parameters.Add( "@lastname", txtLastName.Text );
cmdUpdate.Parameters.Add( "@phone", txtPhone.Text );
conn.Open();
cmdUpdate.ExecuteNonQuery();
conn.Close();
DataList1.EditItemIndex =-1;
BindDataList();
}
</Script><html><head><title>DataListEdit.aspx</title></head><body><form Runat="Server"><asp:DataList
ID="DataList1"
DataKeyField="au_id"
OnEditCommand="DataList1_EditCommand"
OnCancelCommand="DataList1_CancelCommand"
OnDeleteCommand="DataList1_DeleteCommand"
OnUpdateCommand="DataList1_UpdateCommand"
RepeatColumns="4"
GridLines="Both"
CellPadding="10"
EditItemStyle-BackColor="lightgrey"
Runat="Server"><ItemTemplate><%#DataBinder.Eval(Container.DataItem, "au_lname" )%>
- <%#DataBinder.Eval(Container.DataItem, "phone" )%><br><asp:LinkButton
Text="Edit!"
CommandName="edit"
Runat="Server"/></ItemTemplate><EditItemTemplate><b>Last Name:</b><br><asp:TextBox
ID="txtLastName"
Text='<%#DataBinder.Eval(Container.DataItem, "au_lname" )%>'
Runat="Server" />
<p><b>Phone:</b><br><asp:TextBox
ID="txtPhone"
Text='<%#DataBinder.Eval(Container.DataItem, "phone" )%>'
Runat="Server" />
<p><asp:LinkButton
Text="Update!"
CommandName="update"
Runat="Server"/><asp:LinkButton
Text="Delete!"
CommandName="delete"
Runat="Server"/><asp:LinkButton
Text="Cancel!"
CommandName="cancel"
Runat="Server"/></EditItemTemplate></asp:DataList></form></body></html>