This article mainly introduces the implementation of ASP. NET-GridView binding List and page return values. For more information, see
I used to bind WPF. ASP. NET does not seem to be very useful. Next let's take a look at ASP. NET binding usage. In general, DataTable can be bound directly, but I think the bound List is more in line with object-oriented programming.
The binding method is the following code:
The Code is as follows:
GridView name. DataSource = List <custom class>;
GridView name. DataBind ();
Let's look at the example. Here is an example of binding a PersonModel class. The page response parameters are used and transmitted using js. js can be written at the front end or directly in the background code.
Project Structure:
Effect:
Entity class
The Code is as follows:
Public class PersonModel
{
Private int personIndex;
Public int PersonIndex
{
Get {return personIndex ;}
Set {personIndex = value ;}
}
Private string personID;
Public string PersonID
{
Get {return personID ;}
Set {personID = value ;}
}
Private string personName;
Public string PersonName
{
Get {return personName ;}
Set {personName = value ;}
}
Private string personSex;
Public string PersonSex
{
Get {return personSex ;}
Set {personSex = value ;}
}
Private int personAge;
Public int PersonAge
{
Get {return personAge ;}
Set {personAge = value ;}
}
Private bool personSelected = false;
Public bool PersonSelected
{
Get {return personSelected ;}
Set {personSelected = value ;}
}
}
Write a management class for the bound aspx page for Data Operations
The Code is as follows:
Public class ChildFrmManager
{
Private List <PersonModel> personCollect = new List <PersonModel> ();
Private static ChildFrmManager instance = null;
Public List <PersonModel> PersonCollect
{
Get {return personCollect ;}
Set {personCollect = value ;}
}
Public static ChildFrmManager DoGetInstance ()
{
If (instance = null)
{
Instance = new ChildFrmManager ();
}
Return instance;
}
Public void DoAddPersons ()
{
For (int I = 0; I <20; I ++)
{
PersonModel model = new PersonModel ();
Model. PersonIndex = I + 1;
Model. PersonID = System. Guid. NewGuid (). ToString ();
Model. PersonName = "test" + I;
Model. PersonAge = 27 + I;
Model. PersonSex = I % 2 = 0? "Male": "female ";
Model. PersonSelected = false;
This. PersonCollect. Add (model );
}
}
}
Bound page front-end
The Code is as follows:
<% @ Page Language = "C #" AutoEventWireup = "true" CodeBehind = "ChildFrm. aspx. cs" Inherits = "ASPNetGridView. Pages. ChildFrm" %>
<! DOCTYPE html PUBLIC "-// W3C // dtd xhtml 1.0 Transitional // EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<Html xmlns = "http://www.w3.org/1999/xhtml">
<Head runat = "server">
<Title> </title>
</Head>
<Body id = "MyBody" runat = "server" ms_positioning = "GridLayout">
<Form id = "Form1" runat = "server" method = "post">
<Div>
<Asp: GridView ID = "dgPersons" runat = "server" AutoGenerateColumns = "False"
EnableViewState = "false"
CellPadding = "4" ForeColor = "#333333" DataKeyNames = "PersonID"
OnSelectedIndexChanged = "Selcted_Click">
<Columns>
<Asp: CommandField ShowSelectButton = "True"/>
<Asp: BoundField DataField = "PersonIndex" HeaderText = "no."/>
<Asp: TemplateField>
<ItemTemplate>
<Input id = "radiobutton1" name = "pselect" type = "radio"/>
</ItemTemplate>
</Asp: TemplateField>
<Asp: BoundField DataField = "PersonName" HeaderText = "name"/>
<Asp: BoundField DataField = "PersonAge" HeaderText = "Age"/>
<Asp: BoundField DataField = "PersonSex" HeaderText = "gender"/>
</Columns>
<FooterStyle BackColor = "# 5D7B9D" Font-Bold = "True" ForeColor = "White"/>
<PagerStyle BackColor = "#284775" ForeColor = "White" HorizontalAlign = "Center"/>
<SelectedRowStyle BackColor = "# E2DED6" Font-Bold = "True" ForeColor = "#333333"/>
<HeaderStyle BackColor = "# 5D7B9D" Font-Bold = "True" ForeColor = "White"/>
<EditRowStyle BackColor = "#999999" type = "regxph" text = "yourobjectname"/>
<AlternatingRowStyle BackColor = "White" ForeColor = "#284775"/>
</Asp: GridView>
</Div>
</Form>
</Body>
</Html>
Bind page background
The Code is as follows:
Public partial class ChildFrm: System. Web. UI. Page
{
Private ChildFrmManager dManager = null;
Protected PersonModel selectItem = null;
Protected void Page_Load (object sender, EventArgs e)
{
DManager = ChildFrmManager. DoGetInstance ();
If (! IsPostBack)
{
DManager. DoAddPersons ();
This. dgPersons. DataSource = dManager. PersonCollect;
This. dgPersons. DataBind ();
}
}
Protected void Selcted_Click (object sender, EventArgs e)
{
Int selectIndex = this. dgPersons. SelectedIndex;
Foreach (PersonModel mitem in dManager. PersonCollect)
{
If (mitem. PersonIndex-1 = selectIndex)
{
Mitem. PersonSelected = true;
}
Else
{
Mitem. PersonSelected = false;
}
}
SelectItem = dManager. PersonCollect [selectIndex];
String vbCrLf = "";
String strScript = "<script>" + vbCrLf;
StrScript + = "window. parent. returnValue = '" + selectItem. PersonName + "';" + vbCrLf;
StrScript + = "window. parent. close ();" + vbCrLf;
StrScript + = "</script>" + vbCrLf;
If (! IsClientScriptBlockRegistered ("clientScript "))
{
RegisterClientScriptBlock ("clientScript", strScript );
}
}
}
Page hosting the binding page
Copy the Code as follows:
<% @ Page Language = "C #" AutoEventWireup = "true" CodeBehind = "FrameFrm. aspx. cs" Inherits = "ASPNetGridView. Pages. FrameFrm" %>
<! DOCTYPE html PUBLIC "-// W3C // dtd xhtml 1.0 Transitional // EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<Html xmlns = "http://www.w3.org/1999/xhtml">
<Head runat = "server">
<Title> </title>
</Head>
<Frameset rows = "0, *">
<Frame src = "about: blank">
<Frame src = "ChildFrm. aspx">
</Frameset>
</Html>
On the homepage, obtain the returned js values on the front-end
Copy the Code as follows:
<% @ Page Language = "C #" AutoEventWireup = "true" CodeBehind = "Default. aspx. cs" Inherits = "ASPNetGridView. _ Default" %>
<! DOCTYPE html PUBLIC "-// W3C // dtd xhtml 1.0 Transitional // EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<Html xmlns = "http://www.w3.org/1999/xhtml">
<Head runat = "server">
<Title> </title>
</Head>
<Body>
<Div align = "center">
<Form id = "Form1" runat = "server" method = "post">
<Table runat = "server">
<Tr>
<Td>
<Asp: Label ID = "Label1" runat = "server" Font-Bold = "true"> select result </asp: Label>
</Td>
<Td>
<Asp: TextBox ID = "txtShowReturnValue" runat = "server" Width = "100px"/>
</Td>
<Td>
<Asp: Button ID = "btnOpenNewFrm" runat = "server" Text = "select" Width = "60px" OnClientClick = "OpenNewWindow ()"/>
</Td>
</Tr>
</Table>
</Form>
</Div>
</Body>
<Script type = 'text/javascript '>
Function OpenNewWindow (){
Var str = window. showModalDialog ('pages/FrameFrm. aspx ', document.Form1.txt ShowReturnValue. value, 'dialogwidth = 1000px; dialogHeight = 900px', 'scroll: Yes ');
If (str! = Null)
{Document.Form1.txt ShowReturnValue. value = str ;}
}
</Script>
</Html>
Code download
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