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;
}
}
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]);