Question

我有一个名为abc.cs的班级。我正在使用自定义函数来搜索这样的标准：

public System.Data.DataTable myFunction(string SearchText, string ColumnName, string   
SearchCriteria)
{     
      // ColumnName is the name of the column in db table as shown below in 
      // query e.g a , b , c , d, e
      try
      {
            string strQuery = "SELECT a,b,c,d,e FROM myTable ";

            SearchText = SearchText.Trim().Replace("[", "[[]");
            SearchText = SearchText.Trim().Replace("'", "''");
            SearchText = SearchText.Trim().Replace("%", "[%]");
            SearchText = SearchText.Trim().Replace("_", "[_]");

            if (SearchText != "")
            {
                strQuery += " where " + ColumnName + " LIKE ";
                if (SearchCriteria == "x")
                {
                    strQuery += "'" + SearchText + "%'";
                }
                else if (SearchCriteria == "y")
                {
                    strQuery += "'%" + SearchText + "'";
                }
                else if (SearchCriteria == "z")
                {
                    strQuery += "'%" + SearchText + "%'";
                }
                else
                {
                    strQuery += "'" + SearchText + "'";
                }

            }
            strQuery += "ORDER BY b";
        }
        catch (Exception E)
        {

        }
    }

到目前为止我尝试过的商店程序：

USE [dbName]
GO

SET ANSI_NULLS ON
GO

SET QUOTED_IDENTIFIER ON
GO

CREATE PROCEDURE [dbo].[abc] 

@SearchText nvarchar(100) 

AS
BEGIN

SELECT a,b,c,d,e FROM myTable ;
-- what should be the criteria here.

END

GO

我很难理解如何在商店流程中的条件中使用searchText，以及在searchText中使用myFunction的方式是什么。

Answer 1

你可以用这个......

USE [dbName]
GO

SET ANSI_NULLS ON
GO

SET QUOTED_IDENTIFIER ON
GO

CREATE PROCEDURE [dbo].[abc] 

@SearchText nvarchar(100) 

AS
BEGIN
DECLARE @sql nvarchar(4000)
SET @sql = 'SELECT a,b,c,d,e FROM myTable ' + @SearchText
-- what should be the criteria here.
EXEC sp_executesql @sql
END

GO

在C＃，ASP.NET中的类中执行存储过程

1 个答案: