Home > Developer > .Net Core

Database CURD Based on ADODBX and database CURD Based on ADODBX

Source: Internet
Author: User
Developer on Alibaba Coud: Build your first app with APIs, SDKs, and tutorials on the Alibaba Cloud. Read more ＞

Database CURD Based on ADODBX and database CURD Based on ADODBX

I have been learning asp.net for more than a week. I didn't know anything about it before, and I don't know how to find some relevant materials to learn it. If I don't understand it, I will ask others how to do it and how to write it, if it weren't for the foundation of jsp and php, it would take a long time to learn. Record what you write, a simple CURD.

Index. aspx:

<% @ Page Language = "C #" AutoEventWireup = "true" CodeBehind = "index. aspx. cs" Inherits = "CURD. index" %>

<! 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>
<Form id = "form1" runat = "server">
<Div>
<% Response. Write (this. ClientHTML); %>
</Div>
</Form>
</Body>
</Html>

 

Reference ADODBX before connecting to the database;

Index. aspx. cs

 

Using System;
Using System. Collections. Generic;
Using System. Linq;
Using System. Web;
Using System. Web. UI;
Using System. Web. UI. WebControls;
Using ADODBX;


Namespace CURD
{
Public partial class index: System. Web. UI. Page
{
Private string SysClientHTML = "";
Public string ClientHTML {get {return SysClientHTML ;}}

Protected void Page_Load (object sender, EventArgs e)
{
ADODBX. Connection objConn = new Connection ();
ADODBX. Recordset objRs = new Recordset ();

// SysClientHTML + = "<script type = \" text/javascript \ "> ";
// SysClientHTML + = "function confirmDel (){";
// SysClientHTML + = "if (confirm (\" are you sure you want to delete it? \")){";
// SysClientHTML + = "Response. Redirect (\" DelInfo. aspx? Id = <% = objRs. Fields ('number') %> \");";
// SysClientHTML + = "}";
// SysClientHTML + = "}";
// SysClientHTML + = "</script> ";


SysClientHTML + = "<table border = 1 style = \" margin: 0 auto; width: 600px; text-align: center; \ "> ";
SysClientHTML + = "<tr> ";
SysClientHTML + = "<td height = \" 25px; \ "> information number </td> ";
SysClientHTML + = "<td height = \" 25px; \ "> User Name </td> ";
SysClientHTML + = "<td height = \" 25px; \ "> User age </td> ";
SysClientHTML + = "<td height = \" 25px; \ "> User email </td> ";
SysClientHTML + = "<td height = \" 25px; \ "> Data Operations </td> ";
SysClientHTML + = "</tr> ";

ObjConn. Open ("Provider = Microsoft. Jet. OLEDB.4.0; Data Source =" + Server. MapPath ("~ /App_data/") +" CRUDTest. mdb ");
ObjRs. Open ("select * from [person]", objConn, 3 );

While (! ObjRs. EOF)
{
SysClientHTML + = "<tr> ";
SysClientHTML + = "<td height = \" 25px; \ ">" + objRs. Fields ("no.") + "</td> ";
SysClientHTML + = "<td height = \" 25px; \ ">" + objRs. Fields ("username") + "</td> ";
SysClientHTML + = "<td height = \" 25px; \ ">" + objRs. Fields ("age") + "</td> ";
SysClientHTML + = "<td height = \" 25px; \ ">" + objRs. Fields ("Email") + "</td> ";
SysClientHTML + = "<td height = \" 25px; \ "> ";
// SysClientHTML + = "<a href = \" AddInfo. aspx \ "> Add </a> & nbsp; <a href = \" JavaScript: confirmDel (); \ "> Delete </a> & nbsp; <a href = \ "# \"> modify </a> ";
SysClientHTML + = "<a href = \" AddInfo. aspx \ "> Add </a> & nbsp; <a href = \" DelInfo. aspx? Id = "+ objRs. Fields (" no. ") +" \ "> Delete </a> & nbsp; <a href = \" ChangeInfo. aspx? Id = "+ objRs. Fields (" no. ") +" \ "> modify </a> ";

SysClientHTML + = "</td> ";
SysClientHTML + = "</tr> ";
ObjRs. MoveNext ();
}
ObjRs. Close ();
ObjConn. Close ();
ObjRs = null;
ObjConn = null;

SysClientHTML + = "</table> ";
}
}
}

The query is complete, and the next step is to add data to the database.

AddInfo. aspx

<% @ Page Language = "C #" AutoEventWireup = "true" CodeBehind = "AddInfo. aspx. cs" Inherits = "CURD. AddInfo" %>

<! 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 id = "Head1" runat = "server">
<Title> </title>
</Head>
<Body>
<% If (Request ["action"] = null | Request ["action"] = "") {%>
<Form id = "form1" runat = "server">
<Script type = "text/javascript">
Function selfSubmit (){
Var form1 = document. getElementById ("form1 ");
Form1.action = "AddInfo. aspx? Action = savedata ";
Form1.submit ();
}
</Script>
<Table border = "1" id = "table1" style = "margin: 0 auto; width: 400px;">
<Tr>
<Td width = "200"> user nickname </td>
<Td width = "200"> <asp: TextBox runat = "server" ID = "username"> </asp: TextBox> </td>
</Tr>
<Tr>
<Td width = "200"> User age </td>
<Td width = "200"> <asp: TextBox runat = "server" ID = "age"> </asp: TextBox> </td>
</Tr>
<Tr>
<Td width = "200"> User email </td>
<Td width = "200"> <asp: TextBox runat = "server" ID = "Email"> </asp: TextBox> </td>
</Tr>
<Tr>
<Td width = "200" colspan = "2" style = "text-align: center;">
<Input type = "button" value = "Submit" onclick = "javascript: selfSubmit ();"/>
<Input type = "reset" value = "reset"/>
</Td>
</Tr>
</Table>
</Form>
<% }%>


<% If (Request ["action"] = "savedata "){
// Data output after data return
} %>
</Body>
</Html>

 

AddInfo. aspx. cs

Using System;
Using System. Collections. Generic;
Using System. Linq;
Using System. Web;
Using System. Web. UI;
Using System. Web. UI. WebControls;
Using ADODBX;
Namespace CURD
{
Public partial class AddInfo: System. Web. UI. Page
{
Protected void Page_Load (object sender, EventArgs e)
{
If (Request ["action"] = "savedata") savedata ();
}
Public void savedata (){
String Suser = Request ["username"];
String Sage = Request ["age"];
String SEmail = Request ["Email"];
// Create an object
ADODBX. Connection objConn = new Connection ();
ADODBX. Recordset objRs = new Recordset ();

// Link to the database
ObjConn. Open ("Provider = Microsoft. Jet. OLEDB.4.0; Data Source =" + Server. MapPath ("~ /App_data/") +" CRUDTest. mdb ");
ObjRs. Open ("Select * from [person]", objConn, 2 );
ObjRs. AddNew ();
ObjRs. Fields ("username", Suser );
ObjRs. Fields ("age", Sage );
ObjRs. Fields ("Email", SEmail );
ObjRs. Update ();
// Server. Execute ("index. aspx ");
Response. Redirect ("~ /Index. aspx ");
ObjRs. Close ();
ObjConn. Close ();
ObjRs = null;
ObjConn = null;

}
}
}

SaveInfo. aspx

<% @ Page Language = "C #" AutoEventWireup = "true" CodeBehind = "SaveInfo. aspx. cs" Inherits = "CURD. SaveInfo" %>

<! 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>
<Form id = "form1" runat = "server">
<Div>

</Div>
</Form>
</Body>
</Html>

 

SaveInfo. aspx. cs

Using System;
Using System. Collections. Generic;
Using System. Linq;
Using System. Web;
Using System. Web. UI;
Using System. Web. UI. WebControls;
Using ADODBX;

Namespace CURD
{
Public partial class SaveInfo: System. Web. UI. Page
{
Protected void Page_Load (object sender, EventArgs e)
{
String Suser = Request ["username"];
// String sUserName
// All obtained by ruquest are string types for type conversion.
Int Sage = Convert. ToInt32 (Request ["age"]);
String SEmail = Request ["Email"];
// Create an object
ADODBX. Connection objConn = new Connection ();
ADODBX. Recordset objRs = new Recordset ();

// Link to the database
ObjConn. Open ("Provider = Microsoft. Jet. OLEDB.4.0; Data Source =" + Server. MapPath ("~ /App_data/") +" CRUDTest. mdb ");
ObjRs. Open ("select * form [use]", objConn, 2 );
ObjRs. AddNew ();
ObjRs. Fields ("username", Suser );
ObjRs. Fields ("age", Convert. ToString (Sage ));
ObjRs. Fields ("Email", SEmail );
ObjRs. Update ();
ObjRs. Close ();
ObjConn. Close ();
ObjRs = null;
ObjConn = null;
}
}
}

After adding the data, the following part is the modification part. In the modification part, pay attention to the id transmission problem.

 

ChangeInfo. aspx

<% @ Page Language = "C #" EnableViewStateMac = "false" AutoEventWireup = "true" CodeBehind = "ChangeInfo. aspx. cs" Inherits = "CURD. changeInfo" %>

<! 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>
<Form id = "form1" runat = "server" action = "UpdateInfo. aspx" method = "post">
<% -- <Asp: TextBox runat = "server" ID = "hidden" name = "id" Visible = "False"> </asp: TextBox> -- %>
<Input type = "hidden" id = "ID" name = "hidden" runat = "server"/>
<Table border = 1 style = "margin: 0 auto; width: 400px;">
<Tr>
<Td width = "200px;"> User Name </td>
<Td width = "200px;"> <asp: TextBox ID = "username" runat = "server"> </asp: TextBox> </td>
</Tr>
<Tr>
<Td width = "200px;"> User age </td>
<Td width = "200px;"> <asp: TextBox runat = "server" ID = "age"> </asp: TextBox> </td>
</Tr>
<Tr>
<Td width = "200px;"> User email </td>
<Td width = "200px;"> <asp: TextBox runat = "server" ID = "Email"> </asp: TextBox> </td>
</Tr>
<Tr>
<Td style = "text-align: center" colspan = "2">
<Input type = "submit" value = "submit"/>
<Input type = "reset" value = "reset"/>
</Td>
</Tr>
</Table>
</Form>
</Body>
</Html>

 

 

ChangeInfo. aspx. cs

 

Using System;
Using System. Collections. Generic;
Using System. Linq;
Using System. Web;
Using System. Web. UI;
Using System. Web. UI. WebControls;
Using ADODBX;

Namespace CURD
{
Public partial class changeInfo: System. Web. UI. Page
{
Private string SysClientHTML = "";
Public string ClientHTML {get {return SysClientHTML ;}}

Protected void Page_Load (object sender, EventArgs e)
{
Int id = Convert. ToInt32 (Request ["id"]);
ADODBX. Connection objConn = new Connection ();
ADODBX. Recordset objRs = new Recordset ();
ObjConn. Open ("Provider = Microsoft. Jet. OLEDB.4.0; Data Source =" + Server. MapPath ("~ /App_data/") +" CRUDTest. mdb ");
ObjRs. Open ("select * from person where no. =" + id, objConn, 2 );

Username. Text = objRs. Fields ("username ");
Age. Text = objRs. Fields ("age ");
Email. Text = objRs. Fields ("Email ");
ID. Value = objRs. Fields ("no ");

ObjRs. Close ();
ObjConn. Close ();
ObjConn = null;
ObjRs = null;
}
}
}

 

 

UpdateInfo. aspx

 

<% @ Page Language = "C #" EnableViewStateMac = "false" AutoEventWireup = "true" CodeBehind = "UpdateInfo. aspx. cs" Inherits = "CURD. UpdateInfo" %>

<! 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>
<Form id = "form1" runat = "server">
<Div>

</Div>
</Form>
</Body>
</Html>

 

UpdateInfo. aspx. cs

 

Using System;
Using System. Collections. Generic;
Using System. Linq;
Using System. Web;
Using System. Web. UI;
Using System. Web. UI. WebControls;
Using ADODBX;

Namespace CURD
{
Public partial class UpdateInfo: System. Web. UI. Page
{
Protected void Page_Load (object sender, EventArgs e)
{
String Sid = Request ["ID"];
String Suser = Request ["username"];
Response. Write (Suser );
String Sage = Request ["age"];
String SEmail = Request ["Email"];
// Create an object
ADODBX. Connection objConn = new Connection ();
ADODBX. Recordset objRs = new Recordset ();

// Link to the database
ObjConn. Open ("Provider = Microsoft. Jet. OLEDB.4.0; Data Source =" + Server. MapPath ("~ /App_data/") +" CRUDTest. mdb ");
ObjRs. Open ("Select * from [person] where id =" + Sid, objConn, 2 );
ObjRs. Fields ("username", Suser );
ObjRs. Fields ("age", Sage );
ObjRs. Fields ("Email", SEmail );
ObjRs. Update ();
// Server. Execute ("index. aspx ");
Response. Redirect ("index. aspx ");
ObjRs. Close ();
ObjConn. Close ();
ObjRs = null;
ObjConn = null;
}
}
}

 

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

Related Keywords:
web based database software php file based database cloud based access database coins based on ethereum games based on movies find font based on image what is windows based on
Related Article
asp.net Core Data protection (the data Protection cluster sce...
asp.net core-authorize characteristics
Micro-service Monitoring zipkin+asp.net core
Combine ASP NET Core and SQL Server with Docker Compose
ASP. net mvc creates 404 jump instances (not 302 and 200), mv...
Comparison between Orchard and ABP architectures (aspnetboile...

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

What's Trending
Top 10 Tags
datastax versions naming convention zookeeper client class definition md5 microsoft sql server 2005 data structures exception handling error handling
Top 10 Keywords
microsoft download center down wordpress address url site address url wordpress address url windows installer 4 0 download 302 not found web address url definition site address url wordpress db2 integer mac os installation step by step pdf abbreviation for return

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

Get Started for Free

  • Sales Support

    1 on 1 presale consultation

    Chat Contact Sales

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

    Open a Ticket

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.

    Learn More