C# 从存储过程内的select获取结果
我在MicrosoftSQLServer中有一个存储过程,它将数据插入表中,并作为输出返回错误代码和错误描述C# 从存储过程内的select获取结果,c#,asp.net,json,sql-server,stored-procedures,C#,Asp.net,Json,Sql Server,Stored Procedures,我在MicrosoftSQLServer中有一个存储过程,它将数据插入表中,并作为输出返回错误代码和错误描述 private string[] SetServiceUpdateData(XmlDocument xmlDoc) { string[] returnParms = new string[2]; SqlConnection conn = new SqlConnection(ConfigurationManager.AppSettings["Acessos"].ToStr
private string[] SetServiceUpdateData(XmlDocument xmlDoc)
{
string[] returnParms = new string[2];
SqlConnection conn = new SqlConnection(ConfigurationManager.AppSettings["Acessos"].ToString());
try
{
using (SqlCommand cmd = new SqlCommand("dbo.sp_ServiceUpdateData", conn))
{
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add("@Id", SqlDbType.VarChar, 255).Value = ValidateParameter(xmlDoc.GetElementsByTagName("Id"));
cmd.Parameters.Add("@Status", SqlDbType.VarChar, 255).Value = ValidateParameter(xmlDoc.GetElementsByTagName("Status"));
cmd.Parameters.Add("@ERROR_CODE", SqlDbType.TinyInt, 4).Direction = ParameterDirection.Output;
cmd.Parameters.Add("@ERROR_DESCRIPTION", SqlDbType.VarChar, 255).Direction = ParameterDirection.Output;
conn.Open();
cmd.ExecuteNonQuery();
dataReader.Close();
returnParms[0] = Convert.ToString(cmd.Parameters["@Error_code"].Value);
returnParms[1] = Convert.ToString(cmd.Parameters["@ERROR_DESCRIPTION"].Value);
}
}
catch (Exception e)
{
returnParms[0] = returnParms[0] + e.Source;
returnParms[1] = returnParms[1] + e.Message;
}
finally
{
if ((conn != null) && (conn.State == ConnectionState.Open))
{
conn.Close();
conn.Dispose();
conn = null;
}
}
return returnParms;
}
存储过程是这样的(它有很多参数,所以我删除了很多):
代码和存储过程工作正常,我可以插入值并返回输出。存储过程在插入后还有一个select,我需要返回json
如何在从存储过程返回返回返回参数的同时返回该select的值?为此,您需要使用dataset来执行stroredprocedure。我已经修改了下面的代码
private string[] SetServiceUpdateData(XmlDocument xmlDoc)
{
string[] returnParms = new string[2];
SqlConnection conn = new SqlConnection(ConfigurationManager.AppSettings["Acessos"].ToString());
try
{
using (SqlCommand cmd = new SqlCommand("dbo.sp_ServiceUpdateData", conn))
{
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add("@Id", SqlDbType.VarChar, 255).Value = ValidateParameter(xmlDoc.GetElementsByTagName("Id"));
cmd.Parameters.Add("@Status", SqlDbType.VarChar, 255).Value = ValidateParameter(xmlDoc.GetElementsByTagName("Status"));
cmd.Parameters.Add("@ERROR_CODE", SqlDbType.TinyInt, 4).Direction = ParameterDirection.Output;
cmd.Parameters.Add("@ERROR_DESCRIPTION", SqlDbType.VarChar, 255).Direction = ParameterDirection.Output;
DataSet ds = new DataSet("MyDataSet");
conn.Open();
SqlDataAdapter da = new SqlDataAdapter();
da.SelectCommand = sqlComm;
da.Fill(ds);
dataReader.Close();
returnParms[0] = Convert.ToString(cmd.Parameters["@Error_code"].Value);
returnParms[1] = Convert.ToString(cmd.Parameters["@ERROR_DESCRIPTION"].Value);
}
}
catch (Exception e)
{
returnParms[0] = returnParms[0] + e.Source;
returnParms[1] = returnParms[1] + e.Message;
}
finally
{
if ((conn != null) && (conn.State == ConnectionState.Open))
{
conn.Close();
conn.Dispose();
conn = null;
}
}
return returnParms;
}
为此,您需要使用dataset来执行stroredprocedure。我已经修改了下面的代码
private string[] SetServiceUpdateData(XmlDocument xmlDoc)
{
string[] returnParms = new string[2];
SqlConnection conn = new SqlConnection(ConfigurationManager.AppSettings["Acessos"].ToString());
try
{
using (SqlCommand cmd = new SqlCommand("dbo.sp_ServiceUpdateData", conn))
{
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add("@Id", SqlDbType.VarChar, 255).Value = ValidateParameter(xmlDoc.GetElementsByTagName("Id"));
cmd.Parameters.Add("@Status", SqlDbType.VarChar, 255).Value = ValidateParameter(xmlDoc.GetElementsByTagName("Status"));
cmd.Parameters.Add("@ERROR_CODE", SqlDbType.TinyInt, 4).Direction = ParameterDirection.Output;
cmd.Parameters.Add("@ERROR_DESCRIPTION", SqlDbType.VarChar, 255).Direction = ParameterDirection.Output;
DataSet ds = new DataSet("MyDataSet");
conn.Open();
SqlDataAdapter da = new SqlDataAdapter();
da.SelectCommand = sqlComm;
da.Fill(ds);
dataReader.Close();
returnParms[0] = Convert.ToString(cmd.Parameters["@Error_code"].Value);
returnParms[1] = Convert.ToString(cmd.Parameters["@ERROR_DESCRIPTION"].Value);
}
}
catch (Exception e)
{
returnParms[0] = returnParms[0] + e.Source;
returnParms[1] = returnParms[1] + e.Message;
}
finally
{
if ((conn != null) && (conn.State == ConnectionState.Open))
{
conn.Close();
conn.Dispose();
conn = null;
}
}
return returnParms;
}
谢谢你的回复 我使用的解决方案是:
SqlDataReader dataReader = cmd.ExecuteReader();
DataTable dataTable = new DataTable();
dataTable.Load(dataReader);
returnParms[3] = string.Empty;
returnParms[3] = JsonConvert.SerializeObject(dataTable);
使用Newtonsoft
转换为json
,我的SP、int上出现了一些错误,它们是varchars
谢谢大家的帮助谢谢大家的回复 我使用的解决方案是:
SqlDataReader dataReader = cmd.ExecuteReader();
DataTable dataTable = new DataTable();
dataTable.Load(dataReader);
returnParms[3] = string.Empty;
returnParms[3] = JsonConvert.SerializeObject(dataTable);
使用Newtonsoft
转换为json
,我的SP、int上出现了一些错误,它们是varchars
感谢大家提供的帮助使用ExecuteReadInstant执行查询然后将读取器加载到数据表中您需要在SPUse ExecuteReadInstant中分配返回到输出变量的值ExecuteReadInstant执行查询然后将读取器加载到数据表中您需要分配返回到输出变量的值您的SP