diff --git a/v2/printer/binary.go b/v2/printer/binary.go
index 16c29247..824b273b 100644
--- a/v2/printer/binary.go
+++ b/v2/printer/binary.go
@@ -15,7 +15,7 @@ func (self *binaryPrinter) Run(g *Globals) *Stream {
 	fileStresam := NewStream()
 	fileStresam.WriteString("TABTOY")
 	fileStresam.WriteInt32(combineFileVersion)
-	fileStresam.WriteString(BinaryBuildID())
+	fileStresam.WriteString(g.BuildID)
 
 	for index, tab := range g.Tables {
 
diff --git a/v2/printer/csharp.go b/v2/printer/csharp.go
index 2fd148de..0b542483 100644
--- a/v2/printer/csharp.go
+++ b/v2/printer/csharp.go
@@ -4,10 +4,11 @@ import (
 	"fmt"
 	"text/template"
 
+	"bytes"
+	"crypto/md5"
 	"github.com/davyxu/tabtoy/v2/i18n"
 	"github.com/davyxu/tabtoy/v2/model"
 	"strings"
-	"time"
 )
 
 const csharpTemplate = `// Generated by github.com/davyxu/tabtoy
@@ -364,14 +365,8 @@ type csharpFileModel struct {
 	VerticalFields []csharpField
 
 	GenSerializeCode bool
-}
-
-func (self *csharpFileModel) BuildID() string {
-	return BinaryBuildID()
-}
 
-func BinaryBuildID() string {
-	return time.Now().Format("2006-01-02 15:04:05")
+	BuildID string
 }
 
 type csharpPrinter struct {
@@ -467,6 +462,16 @@ func (self *csharpPrinter) Run(g *Globals) *Stream {
 
 	bf := NewStream()
 
+	var md5Buffer bytes.Buffer
+	err = tpl.Execute(&md5Buffer, &m)
+	if err != nil {
+		log.Errorln(err)
+		return nil
+	}
+
+	m.BuildID = fmt.Sprintf("%x", md5.Sum(bf.Buffer().Bytes()))
+	g.BuildID = m.BuildID
+
 	err = tpl.Execute(bf.Buffer(), &m)
 	if err != nil {
 		log.Errorln(err)
diff --git a/v2/printer/globals.go b/v2/printer/globals.go
index f9d3b302..518f42f8 100644
--- a/v2/printer/globals.go
+++ b/v2/printer/globals.go
@@ -33,6 +33,7 @@ type Globals struct {
 	GlobalIndexes []TableIndex      // 类型信息.全局索引
 	CombineStruct *model.Descriptor // 类型信息.Combine结构体
 
+	BuildID string
 }
 
 func (self *Globals) PreExport() bool {