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        Dim connectionString As String = _
              "Provider=MS Remote;" & _
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Dim connectionString As String = _
"Provider=MS Remote;" & _
"Remote Server=http://127.0.0.1;" & _
"Remote Provider=Microsoft.Jet.OLEDB.4.0;" & _
......

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Microsoft ActiveX Data Objects 2.x Library
Microsoft ADO Ext. 2.x for DDL and Security
VB.NET code:
Imports ADOX
Public Class Form1
Private Sub Button1_Click(ByVal sender As Sy ......

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DBNull.value


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==============ÕâÊÇʹÓÃÊý×é±íʾ·¨Õý³£ÔËÐеİ汾===================
#include<stdio.h>
copy_string(char from[],char to[]){
int i=0;
while(from[i]!='\0'){
to[i] = from[i];
i++;
}
to[i] = '\0';
}
main(){
char a[] = "I am a teache ......

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using System.Data.SqlClient;

public class DBHelper
{
    public DBHelper()
    {
    }
    public static SqlConnction Create()
    {return n ......
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