asp.net分页，Effective paging with List View control in ASP.NET

原文：http://www.codeproject.com/Articles/142326/Effective-paging-with-List-View-control-in-ASP-NET

demo:



主要代码：

/*
            CREATE PROCEDURE [dbo].[Profile_Total]
            AS
            BEGIN

                SET NOCOUNT ON
                SELECT COUNT(*) FROM Profile
            END
            
         ==================================================
          
            CREATE PROCEDURE [dbo].[Profile_GET]
                @PageSize int = null,
                @CurrentPage int = null,
                @SortExpression    nvarchar(max) = null
            AS

            BEGIN
                SET NOCOUNT ON

                DECLARE @SqlString nvarchar(max)
                Declare @UpperBand int
                Declare @LowerBand int        
    
                SET @LowerBand  = (@CurrentPage - 1) * @PageSize
                SET @UpperBand  = (@CurrentPage * @PageSize) + 1

                BEGIN

                WITH tempProfile AS(                    
                    SELECT 
                        [ProfileId],
                        [Name],
                        [Address],
                        [Email],
                        [Mobile], 
                        [IsActive] = CASE [IsActive] WHEN 1 THEN 'Active' WHEN 0 THEN 'DeActive' END,
                        ROW_NUMBER() OVER (ORDER BY 
                            CASE @SortExpression WHEN 'ProfileId'   THEN [ProfileId] END,
                            CASE @SortExpression WHEN 'Name'        THEN [Name] END,
                            CASE @SortExpression WHEN 'Address'     THEN [Address] END,
                            CASE @SortExpression WHEN 'Email'       THEN [Email] END,
                            CASE @SortExpression WHEN 'Mobile'      THEN [Mobile] END,
                            CASE @SortExpression WHEN 'Status'      THEN [IsActive] END
                         ) AS RowNumber
                        FROM [dbo].[Profile]        
                )     
    
                SELECT 
                    [ProfileId],
                    [Name],
                    [Address],
                    [Email],
                    [Mobile], 
                    [IsActive]
                    FROM 
                        tempProfile 
                    WHERE 
                        RowNumber > @LowerBand AND RowNumber < @UpperBand
                        ORDER BY  
                            CASE WHEN @SortExpression ='ProfileId'      THEN [ProfileId] END,
                            CASE WHEN @SortExpression ='ProfileId DESC' THEN [ProfileId] END DESC,
                            CASE WHEN @SortExpression ='Name'           THEN [Name] END,
                            CASE WHEN @SortExpression ='Name DESC'      THEN [Name] END DESC,
                            CASE WHEN @SortExpression ='Address'        THEN [Address] END,
                            CASE WHEN @SortExpression ='Address DESC'   THEN [Address] END DESC,
                            CASE WHEN @SortExpression ='Email'          THEN [Email] END,
                            CASE WHEN @SortExpression ='Email DESC'     THEN [Email] END DESC,
                            CASE WHEN @SortExpression ='Mobile'         THEN [Mobile] END,
                            CASE WHEN @SortExpression ='Mobile DESC'    THEN [Mobile] END DESC,
                            CASE WHEN @SortExpression ='Status'         THEN [IsActive] END,
                            CASE WHEN @SortExpression ='Status DESC'    THEN [IsActive] END DESC
                END
            END
          
         */

[System.ComponentModel.DataObject(true)]
        public class CCDataSource
        {
            public CCDataSource()
            {
            }

            [System.ComponentModel.DataObjectMethod(System.ComponentModel.DataObjectMethodType.Select, false)]
            public Int32 TotalRowCount(Int32 startRowIndex, Int32 pageSize, String sortExpression)
            {
                Int32 intTotalProfile = 0;

                using (SqlConnection conn = new SqlConnection("SQLConnetionString......"))
                {
                    SqlCommand cmdSelect = new SqlCommand();

                    conn.Open();
                    cmdSelect.CommandText = "Profile_Total";
                    cmdSelect.CommandType = CommandType.StoredProcedure;
                    cmdSelect.Connection = conn;

                    SqlDataReader dataReader = cmdSelect.ExecuteReader();

                    dataReader.Read();
                    intTotalProfile = Convert.ToInt32(dataReader[0]);
                }
                return intTotalProfile;
            }

            [System.ComponentModel.DataObjectMethod(System.ComponentModel.DataObjectMethodType.Select, true)]
            public static DataTable GetProfileData(Int32 startRowIndex, Int32 pageSize, String sortExpression)
            {
                DataTable profileDataTable = new DataTable();

                using (SqlConnection conn = new SqlConnection("SQLConnetionString......"))
                {
                    SqlCommand cmdSelect = new SqlCommand();

                    conn.Open();
                    cmdSelect.CommandText = "Profile_GET";
                    cmdSelect.CommandType = CommandType.StoredProcedure;
                    cmdSelect.Connection = conn;

                    startRowIndex = Convert.ToInt32(startRowIndex / pageSize) + 1;

                    if (String.IsNullOrEmpty(sortExpression))
                        sortExpression = "ProfileId";

                    cmdSelect.Parameters.AddWithValue("@CurrentPage", startRowIndex);
                    cmdSelect.Parameters.AddWithValue("@PageSize", pageSize);
                    cmdSelect.Parameters.AddWithValue("@SortExpression", sortExpression);

                    SqlDataAdapter dataAdapter = new SqlDataAdapter();
                    dataAdapter.SelectCommand = cmdSelect;

                    dataAdapter.Fill(profileDataTable);
                }
                //startRowIndex = Convert.ToInt32(startRowIndex / pageSize) + 1;
                return profileDataTable;
            }
        }

另外，导入导入excel：http://www.gemboxsoftware.com/spreadsheet/overview
If you need to import Excel file to a database and already have ADO.NET code entities in place (DataSets, DataTables, DataAdapters) you can do this task trivially with this Excel C# / VB.NET library.

Here is a sample Excel C# code how to import Excel to DataTable (after which you can easily transfer DataTable to database with DataAdapter):

ExcelFile ef = new ExcelFile();
 
// Depending on the format of the input file, you need to change this:
DataTable dataTable = new DataTable();
dataTable.Columns.Add("FirstName", typeof(string));
dataTable.Columns.Add("LastName", typeof(string));
 
// Load Excel file.
ef.LoadXls("FileName.xls");
 
// Select the first worksheet from the file.
ExcelWorksheet ws = ef.Worksheets[0];
 
// Extract the data from the worksheet to the DataTable.
// Data is extracted starting at first row and first column for 10 rows or until the first empty row appears.
ws.ExtractToDataTable(dataTable, 10, ExtractDataOptions.StopAtFirstEmptyRow, ws.Rows[0], ws.Columns[0]);