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Santosh KumarThe space where I am sharing my knowledge and thoughts ASP.Net, Gridview paging simplifiedImports System Imports Microsoft.VisualBasic Imports System.Data Imports System.Configuration Imports MySql.Data.MySqlClient Public Shared Sub BindGridView(ByRef faGV As GridView, ByVal faQry As String, Optional ByVal faIndex As Integer = 0) Dim dsPage As New DataSet If faIndex >= 0 Then faGV.PageIndex = faIndex BindDataSet(dsPage, faQry) faGV.DataSource = dsPage faGV.DataBind() End Sub Public Shared Sub BindDataSet(ByRef faDS As DataSet, ByVal faQry As String) Dim vMySqlConnection As MySqlConnection = Nothing Dim vMySqlDataAdapter As MySqlDataAdapter = Nothing Dim vMySqlCommand As MySqlCommand = Nothing Try vMySqlConnection = New MySqlConnection(ConfigurationManager.AppSettings("WebConfigMySql")) vMySqlCommand = vMySqlConnection.CreateCommand vMySqlCommand.CommandText = faQry vMySqlCommand.CommandType = CommandType.Text vMySqlConnection.Open() vMySqlDataAdapter = New MySqlDataAdapter(vMySqlCommand) faDS = New DataSet vMySqlDataAdapter.Fill(faDS) Catch ex As Exception faDS = Nothing Finally If Not vMySqlDataAdapter Is Nothing Then vMySqlDataAdapter.Dispose() If Not vMySqlCommand Is Nothing Then vMySqlCommand.Dispose() If Not vMySqlConnection Is Nothing Then vMySqlConnection.Dispose() End Try End Sub »»»»»»» by Santosh Kumar ? Original @ http://santu4you.spaces.live.com
VB.Net, ASP.Net, Working with CryptographyImports System.IO Imports Microsoft.VisualBasic Imports System.Security.Cryptography Public Class clsCrypto Private Shared Function GetCryptoKey() As String Dim vRet As String vRet = "jstbhgope" Return vRet End Function Private Shared Function GetCryptoBytes() As Byte() Dim vBytes() As Byte = {&H90, &H34, &H56, &H78, &H12, &HAB, &HCD, &HEF} Return vBytes End Function Public Shared Function DoEnCrypt(ByVal vStr As String) As String Dim vRgbKEY() As Byte = {} Dim vRgbIV() As Byte = GetCryptoBytes() Try vRgbKEY = System.Text.Encoding.UTF8.GetBytes(Left(GetCryptoKey(), 8)) Dim des As New DESCryptoServiceProvider Dim inputByteArray() As Byte = Encoding.UTF8.GetBytes(vStr) Dim ms As New MemoryStream Dim cs As New CryptoStream(ms, des.CreateEncryptor(vRgbKEY, vRgbIV), CryptoStreamMode.Write) cs.Write(inputByteArray, 0, inputByteArray.Length) cs.FlushFinalBlock() Return Convert.ToBase64String(ms.ToArray()) Catch ex As Exception Return ex.Message End Try End Function Public Shared Function DoDeCrypt(ByVal vStr As String) As String Dim vRgbKEY() As Byte = {} Dim vRgbIV() As Byte = GetCryptoBytes() Dim inputByteArray(vStr.Length) As Byte Try vRgbKEY = System.Text.Encoding.UTF8.GetBytes(Left(GetCryptoKey(), 8)) Dim des As New DESCryptoServiceProvider inputByteArray = Convert.FromBase64String(vStr) Dim ms As New MemoryStream Dim cs As New CryptoStream(ms, des.CreateDecryptor(vRgbKEY, vRgbIV), CryptoStreamMode.Write) cs.Write(inputByteArray, 0, inputByteArray.Length) cs.FlushFinalBlock() Dim encoding As System.Text.Encoding = System.Text.Encoding.UTF8 Return encoding.GetString(ms.ToArray()) Catch ex As Exception Return ex.Message End Try End Function End Class »»»»»»» by Santosh Kumar ? Original @ http://santu4you.spaces.live.com
Oracle, How to select records from record no N1 to N2SQL> SELECT ROWNUM, E.* FROM EMP E /*This is the table*/; ROWNUM EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTNO ---------- ---------- ---------- --------- ---------- --------- ---------- ---------- ---------- 1 7369 SMITH CLERK 7902 17-DEC-80 -800 20 2 7499 ALLEN SALESMAN 7698 20-FEB-81 1600 300 30 3 7521 WARD SALESMAN 7698 22-FEB-81 1250 500 30 4 7566 JONES MANAGER 7839 02-APR-81 2975 20 5 7654 MARTIN SALESMAN 7698 28-SEP-81 1250 1400 30 6 7698 BLAKE MANAGER 7839 01-MAY-81 2850 30 7 7782 CLARK MANAGER 7839 09-JUN-81 2450 10 8 7788 SCOTT ANALYST 7566 09-DEC-82 3000 5000.5 20 9 7839 KING PRESIDENT 17-NOV-81 5000 10 10 7844 TURNER SALESMAN 7698 08-SEP-81 1500 0 30 11 7876 ADAMS CLERK 7788 12-JAN-83 1100 20 12 7900 JAMES CLERK 7698 03-DEC-81 950 30 13 7902 FORD ANALYST 7566 03-DEC-81 3000 20 14 7934 MILLER CLERK 7782 23-JAN-82 1300 10 14 rows selected. SQL> SELECT * FROM( /*This will select 5th to 10th records* 2 SELECT ROWNUM RN, E.* FROM EMP E WHERE ROWNUM <= 10 3 ) WHERE RN >= 5 4 / RN EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTNO ---------- ---------- ---------- --------- ---------- --------- ---------- ---------- ---------- 5 7654 MARTIN SALESMAN 7698 28-SEP-81 1250 1400 30 6 7698 BLAKE MANAGER 7839 01-MAY-81 2850 30 7 7782 CLARK MANAGER 7839 09-JUN-81 2450 10 8 7788 SCOTT ANALYST 7566 09-DEC-82 3000 5000.5 20 9 7839 KING PRESIDENT 17-NOV-81 5000 10 10 7844 TURNER SALESMAN 7698 08-SEP-81 1500 0 30 6 rows selected. »»»»»»» by Santosh Kumar ? Original @ http://santu4you.spaces.live.com
Oracle, How to select last N recordsSQL> SELECT ROWNUM, E.* FROM EMP E /*This is the table*/;
---------- ---------- ---------- --------- ---------- --------- ---------- ---------- ---------- 1 7369 SMITH CLERK 7902 17-DEC-80 -800 20 2 7499 ALLEN SALESMAN 7698 20-FEB-81 1600 300 30 3 7521 WARD SALESMAN 7698 22-FEB-81 1250 500 30 4 7566 JONES MANAGER 7839 02-APR-81 2975 20 5 7654 MARTIN SALESMAN 7698 28-SEP-81 1250 1400 30 6 7698 BLAKE MANAGER 7839 01-MAY-81 2850 30 7 7782 CLARK MANAGER 7839 09-JUN-81 2450 10 8 7788 SCOTT ANALYST 7566 09-DEC-82 3000 5000.5 20 9 7839 KING PRESIDENT 17-NOV-81 5000 10 10 7844 TURNER SALESMAN 7698 08-SEP-81 1500 0 30 11 7876 ADAMS CLERK 7788 12-JAN-83 1100 20 12 7900 JAMES CLERK 7698 03-DEC-81 950 30 13 7902 FORD ANALYST 7566 03-DEC-81 3000 20 14 7934 MILLER CLERK 7782 23-JAN-82 1300 10 2 SELECT * FROM( 3 SELECT ROWNUM RN, E.* FROM EMP E 4 ) ORDER BY RN DESC 5 ) WHERE ROWNUM <= 5 6 / ---------- ---------- ---------- --------- ---------- --------- ---------- ---------- ---------- 14 7934 MILLER CLERK 7782 23-JAN-82 1300 10 13 7902 FORD ANALYST 7566 03-DEC-81 3000 20 12 7900 JAMES CLERK 7698 03-DEC-81 950 30 11 7876 ADAMS CLERK 7788 12-JAN-83 1100 20 10 7844 TURNER SALESMAN 7698 08-SEP-81 1500 0 30 »»»»»»» by Santosh Kumar ? Original @ http://santu4you.spaces.live.com
Oracle, How to select random recordsSQL> SELECT ROWNUM, E.* FROM EMP E /*This is the table*/;
---------- ---------- ---------- --------- ---------- --------- ---------- ---------- ---------- 1 7369 SMITH CLERK 7902 17-DEC-80 -800 20 2 7499 ALLEN SALESMAN 7698 20-FEB-81 1600 300 30 3 7521 WARD SALESMAN 7698 22-FEB-81 1250 500 30 4 7566 JONES MANAGER 7839 02-APR-81 2975 20 5 7654 MARTIN SALESMAN 7698 28-SEP-81 1250 1400 30 6 7698 BLAKE MANAGER 7839 01-MAY-81 2850 30 7 7782 CLARK MANAGER 7839 09-JUN-81 2450 10 8 7788 SCOTT ANALYST 7566 09-DEC-82 3000 5000.5 20 9 7839 KING PRESIDENT 17-NOV-81 5000 10 10 7844 TURNER SALESMAN 7698 08-SEP-81 1500 0 30 11 7876 ADAMS CLERK 7788 12-JAN-83 1100 20 12 7900 JAMES CLERK 7698 03-DEC-81 950 30 13 7902 FORD ANALYST 7566 03-DEC-81 3000 20 14 7934 MILLER CLERK 7782 23-JAN-82 1300 10 ---------- ---------- ---------- --------- ---------- --------- ---------- ---------- ---------- 3 7521 WARD SALESMAN 7698 22-FEB-81 1250 500 30 12 7900 JAMES CLERK 7698 03-DEC-81 950 30 4 7566 JONES MANAGER 7839 02-APR-81 2975 20 1 7369 SMITH CLERK 7902 17-DEC-80 -800 20 6 7698 BLAKE MANAGER 7839 01-MAY-81 2850 30 13 7902 FORD ANALYST 7566 03-DEC-81 3000 20 5 7654 MARTIN SALESMAN 7698 28-SEP-81 1250 1400 30 14 7934 MILLER CLERK 7782 23-JAN-82 1300 10 8 7788 SCOTT ANALYST 7566 09-DEC-82 3000 5000.5 20 2 7499 ALLEN SALESMAN 7698 20-FEB-81 1600 300 30 10 7844 TURNER SALESMAN 7698 08-SEP-81 1500 0 30 11 7876 ADAMS CLERK 7788 12-JAN-83 1100 20 7 7782 CLARK MANAGER 7839 09-JUN-81 2450 10 9 7839 KING PRESIDENT 17-NOV-81 5000 10 2 SELECT * FROM EMP ORDER BY DBMS_RANDOM.VALUE 3 ) E WHERE ROWNUM <= 5 4 / ---------- ---------- ---------- --------- ---------- --------- ---------- ---------- ---------- 1 7844 TURNER SALESMAN 7698 08-SEP-81 1500 0 30 2 7654 MARTIN SALESMAN 7698 28-SEP-81 1250 1400 30 3 7698 BLAKE MANAGER 7839 01-MAY-81 2850 30 4 7788 SCOTT ANALYST 7566 09-DEC-82 3000 5000.5 20 5 7499 ALLEN SALESMAN 7698 20-FEB-81 1600 300 30 »»»»»»» by Santosh Kumar ? Original @ http://santu4you.spaces.live.com |
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