Analysis on the Method of Constructing Paging Application with C

In this paper, an example is given to describe the method of building paging application in C #. Share it for your reference, as follows:

1. SQL statement

WITH [temptableforStockIC] AS (
  SELECT *,ROW_NUMBER() OVER (ORDER BY CreateTime DESC) AS RowNumber FROM [StockIC] WHERE 1=1 AND Model = 'FTY765OP'
)
SELECT * FROM [temptableforStockIC] WHERE RowNumber BETWEEN 1 AND 10

2. Background method

/// <summary>
///  Table name 
/// </summary>
private const string _tableNane = "StockIC";
/// <summary>
///  Get inventory list 
/// </summary>
public List<StockIcResult> GetStockIcList(StockIcParam param)
{
  List<StockIcResult> list = new List<StockIcResult>();
  string sql = "WITH [temptablefor{0}] AS";
  sql += " (SELECT *,ROW_NUMBER() OVER (ORDER BY {1}) AS RowNumber FROM [{0}] WHERE 1=1 {2})";
  sql += " SELECT * FROM [temptablefor{0}] WHERE RowNumber BETWEEN {3} AND {4}";
  StringBuilder sqlCondition = new StringBuilder();
  List<SqlParameter> sqlParams = new List<SqlParameter>();
  // Model 
  if (!String.IsNullOrEmpty(param.Model))
  {
    sqlCondition.AppendFormat(" AND Model LIKE '%{0}%'", param.Model);
  }
  // Start time 
  if (param.BeginTime.HasValue)
  {
    sqlCondition.Append(" AND CreateTime >= @BeginTime");
    sqlParams.Add(new SqlParameter("@BeginTime", param.BeginTime.Value));
  }
  // End time 
  if (param.EndTime.HasValue)
  {
    sqlCondition.Append(" AND CreateTime < @EndTime");
    sqlParams.Add(new SqlParameter("@EndTime", param.EndTime.Value.AddDays(1)));
  }
  // Sort 
  if (String.IsNullOrWhiteSpace(param.OrderBy))
  {
    param.OrderBy = " CreateTime DESC";
  }
  // Paging 
  param.PageIndex = param.PageIndex - 1;
  Int64 startNumber = param.PageIndex * param.PageSize + 1;
  Int64 endNumber = startNumber + param.PageSize - 1;
  // Assemble SQL
  sql = String.Format(sql, _tableNane, param.OrderBy, sqlCondition, startNumber, endNumber);
  // Execute SQL Statement 
  DataSet dataSet = DBHelper.GetReader(sql.ToString(), sqlParams.ToArray());
  list = TranToList(dataSet);
  return list;
}

Note: DBHelper. GetReader () method, TranToList () method, etc. Please improve yourself.

1 Some calculation methods

// Paging 
Int64 startNumber = (param.PageIndex - 1) * param.PageSize + 1;
Int64 endNumber = startNumber + param.PageSize - 1;
// Total pages  = ( Total data  +  Page size  -1) /  Page size 
TotalPage = (TotalCount + PageSize - 1) / PageSize;

For more readers interested in C # related contents, please check the topics on this site: "Summary of C # String Operation Skills", "Summary of C # Array Operation Skills", "Summary of XML File Operation Skills in C #", "C # Common Control Usage Tutorial", "WinForm Control Usage Summary", "C # Data Structure and Algorithm Tutorial" and "C # Object-Oriented Programming Introduction Tutorial"

I hope this article is helpful to everyone's C # programming.