C# 查看：set@session=substring（@ctxt，1,4）。我必须如何格式化我的SQL命令，以便CONVERT在1-4中编码一个intager？你不能只使用带前导零的fill吗？像string.Format（“{0:D4}”，session）+

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查看：set@session=substring（@ctxt，1,4）。我必须如何格式化我的SQL命令，以便CONVERT在1-4中编码一个intager？你不能只使用带前导零的fill吗？像string.Format（“{0:D4}”，session）+string.Format（“{0:D4}”，contextId）非常感谢！我确实做了很多调查，也发现了你发布的链接。然而，我没能让它工作。

string strUser = _app.Settings.User;
string strInt = "";

// strInt += '\x0100'; => becomes 1 in trigger
strInt += '\x0000';
strInt += '\x0200'; //=> becomes two in the trigger
strInt += '\u0000';
strInt += '\u0300';//=> becomes 3 in the trigger

// strInt += '\x0000'; 
// strInt += '\x0210'; //=> becomes 4098 in the trigger( 4096=1 + 2=2)
// strInt += '\x0000'; 
// strInt += '\u1300';//=> becomes 19 in the trigger


// strInt += '\x0200'; // = 131072
// strInt += '\x0000'; 
// strInt += '\u0100';// = 65536
// strInt += '\u0000';

//strInt += '\x0000'; 
//strInt += '\x0003'; //768
//strInt += '\u0000';
//strInt += '\u0002'; //512

string strUser = "myself";
string strContextValue = strInt + strUser + "$";
string strContext = "declare @context_info varbinary(120) set @context_info =  CONVERT(varbinary(120), N'" + strContextValue + "') set context_info @context_info";

 SqlCommand scContext = new SqlCommand(strContext, conn, tran);
 scContext.ExecuteNonQuery();

declare @ctxt varbinary(128)
select @ctxt=context_info from master.dbo.sysprocesses where spid = @@spid
set @session=substring(@ctxt,1,4)
set @contextid=substring(@ctxt,5,4)

 byte[] binaryString = (byte[])dataTable.Rows[0][2];
 string x = Encoding.ASCII.GetString(binaryString);

 string strSubX2 = x.Substring(3, 4);
 int iResult = BitConverter.ToInt32(Encoding.Unicode.GetBytes(strSubX2), 0);