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Remove NodeJS & duplicate notes

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Marcello 2022-02-06 16:43:13 +01:00
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DotNet/ASP.NET/WebForms/Page.aspx.cs.md
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# Page.aspx.cs
```cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace Project
{
public partial class Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Control_Event(object sender, EventArgs e)
{
// actions on event trigger
}
}
}
```

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DotNet/ASP.NET/WebForms/Page.aspx.md
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# Page.aspx
The fist loaded page is `Default.aspx` and its underlying code.
```html
<!-- directive -->
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="Project.Default" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml"> <!-- XML Namespace -->
<head runat="server"> <!-- runat: handle as ASP code -->
<title></title>
</head>
<body>
<!-- web forms require a form tag to be the whole body -->
<form id="form1" runat="server"> <!-- runat: handle as ASP code -->
<div>
</div>
</form>
</body>
</html>
```
## ASP.NET Directives
### Page Directive
```cs
<%@ Page Language="C#" // define language used (can be C# or VB)
AutoEventWireup="true" // automatically create and setup event handlers
CodeBehind="Default.aspx.cs" // define the underlying code file
Inherits="EmptyWebForm.Default" %>
```
## Web Controls
```xml
<asp:Control ID="" runat="server" ...></asp:Control>
<!-- Label: empty text will display ID, use empty space as text for empty label -->
<asp:Label ID="lbl_" runat="server" Text=" "></asp:Label>
<!-- TextBox -->
<asp:TextBox ID="txt_" runat="server"></asp:TextBox>
<!-- Button -->
<asp:Button ID="btn_" runat="server" Text="ButtonText" OnClick="btn_Click" />
<!-- HyperLink -->
<asp:HyperLink ID="lnk_" runat="server" NavigateUrl="~/Page.aspx">LINK TEXT</asp:HyperLink>
<!-- LinkButton: POstBackEvent reloads the page -->
<asp:LinkButton ID="lbtHome" runat="server" PostBackUrl="~/Page.aspx" OnClick="lbt_Click">BUTTON TEXT</asp:LinkButton>
<!-- Image -->
<asp:Image ID="img_" runat="server" ImageUrl="~/Images/image.png"/>
<!-- ImageButton -->
<asp:ImageButton ID="imb_" runat="server" ImageUrl="~/Images/image.png" PostBackUrl="~/Page.aspx"/>
<!-- SqlSataSource; connection string specified in Web.config -->
<asp:SqlDataSource ID="sds_" runat="server" ConnectionString="<%$ ConnectionStrings:ConnectionString %>" SelectCommand="SQL Query"></asp:SqlDataSource>
```