Generic Code to Execute Stored Procedures

You can execute a single stored procedure or batch of stored procedures using collections. You can execute any stored procedure with a different number of parameters and data types. Whenever there is any change in stored procedure, you just need to add or delete parameters in the calling code.

Code snippet:

namespace StoredProcExecution
{
      using System;
      using System.Collections;
      using System.Data;
      using System.Data.SqlClient;
      public struct ParamData
      {
            public string pName,pValue;
            public SqlDbType pDataType;
            public ParamData(string pName,SqlDbType pDataType,string pValue)
            {
                  this.pName=pName;
                  this.pDataType=pDataType;
                  this.pValue=pValue;
            }
      }           
      public class StoredProcedure
      {
            private string sProcName;
            private ArrayList sParams=new ArrayList();
			public  void SetParam(string pName,SqlDbType pDataType,string pValue)
            {              
                 ParamData pData=new  ParamData(pName,pDataType,pValue);
                 sParams.Add(pData);
            }
            
            public ArrayList GetParams()
            {
                  if (!(sParams==null))
                  {
                        return sParams;
                  }
                  else
                  {
                        return null;
                  }
            }
            public string ProcName
            {
                  get 
                  { 
                        return sProcName; 
                  }
                  set 
                  {
                        sProcName = value; 
                  }
            }
      }
	  
      public class StoredProcedureCollection:System.Collections.CollectionBase
      {
            public void add(StoredProcedure value)
            {
                  List.Add(value);
            }
            public void Remove(int index)
            {
                  if (index > Count - 1 || index < 0)
                  {
                        //ignore
                        Console.WriteLine("No data to remove");
                  }
                  else
                  {
                        List.RemoveAt(index); 
                  }
            }
            
            public StoredProcedure Item(int Index)
            {
                  return (StoredProcedure) List[Index];
            }
      }
}

Setting Data in Collection:

You can set up the data as given in following example.

StoredProcedureCollection spCollection=new StoredProcedureCollection();
StoredProcedure spData=new StoredProcedure();
spData.ProcName="TestMe";
spData.SetParam("@CountryCode",SqlDbType.Int,1);
spData.SetParam("@City",SqlDbType.VarChar,Hyderabad);
spCollection.add(spProcedure);

Similarly you can add n number of stored procedures to this collection.

Execution part:

You need to parse collection of stored procedures and parameter collection and execute the stored procedure.

 
public static bool ExecuteSps( StoredProcedureCollection spCollection,
                               SqlConnection Connection )
{
      try
      {
            foreach(StoredProcedure spData in spCollection)
            {
                  SqlCommand cmd=new SqlCommand();
                  int i=0;
                  if (Connection.State!=  ConnectionState.Open)
                     Connection.Open();
                  cmd.Connection=Connection;
                  cmd.CommandType=CommandType.StoredProcedure;
                  cmd.CommandText=spData.ProcName;
                  IEnumerator myEnumerator = spData.GetParams().GetEnumerator();
                  while (myEnumerator.MoveNext())
                  {
                      ParamData Data=(ParamData)myEnumerator.Current;
                      cmd.Parameters.Add(pData.pName,pData.pDataType);
                      cmd.Parameters[i].Value=pData.pValue;
                      i=i+1;
                  }
                  cmd.ExecuteNonQuery();
            }
            return true;
                    
      }
      catch(Exception exc)
      {
            return false;
      }
}


Comments

  • Need More

    Posted by sridher on 12/20/2007 03:36am

    i need information about presentation,Business,Data Layer and how its work and coding examples for this.

    Reply
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