[c#数据库同步]C#同步SQLServer数据库Schema

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usingSystem;

usingSystem.Collections.Generic;

usingSystem.Data;

usingSystem.Data.SqlClient;

usingSystem.Text;

namespacePinkDatabaseSync

{

classDBUtility:IDisposable

{

privatestringServer;

privatestringDatabase;

privatestringUid;

privatestringPassword;

privatestringconnectionStr;

privateSqlConnectionsqlConn;

publicvoidEnsureConnectionIsOpen()

{

if(sqlConn==null)

{

sqlConn=newSqlConnection(this.connectionStr);

sqlConn.Open();

}

elseif(sqlConn.State==ConnectionState.Closed)

{

sqlConn.Open();

}

}

publicDBUtility(stringserver,stringdatabase,stringuid,stringpassword)

{

this.Server=server;

this.Database=database;

this.Uid=uid;

this.Password=password;

this.connectionStr="Server="+this.Server+";Database="+this.Database+";UserId="+this.Uid+";Password="+this.Password;

}

publicintExecuteNonQueryForMultipleScripts(stringsqlStr)

{

EnsureConnectionIsOpen();

SqlCommandcmd=sqlConn.CreateCommand();

cmd.CommandType=CommandType.Text;

cmd.CommandText=sqlStr;

returncmd.ExecuteNonQuery();

}

publicintExecuteNonQuery(stringsqlStr)

{

EnsureConnectionIsOpen();

SqlCommandcmd=newSqlCommand(sqlStr,sqlConn);

cmd.CommandType=CommandType.Text;

returncmd.ExecuteNonQuery();

}

publicobjectExecuteScalar(stringsqlStr)

{

EnsureConnectionIsOpen();

SqlCommandcmd=newSqlCommand(sqlStr,sqlConn);

cmd.CommandType=CommandType.Text;

returncmd.ExecuteScalar();

}

publicDataSetExecuteDS(stringsqlStr)

{

DataSetds=newDataSet();

EnsureConnectionIsOpen();

SqlDataAdaptersda=newSqlDataAdapter(sqlStr,sqlConn);

sda.Fill(ds);

returnds;

}

publicvoidDispose()

{

if(sqlConn!=null)

sqlConn.Close();

}

}

}

usingSystem;

usingSystem.Collections.Generic;

usingSystem.Text;

namespacePinkDatabaseSync

{

publicclassSQLDBSystemType

{

publicstaticDictionary<string,string>systemTypeDict</string,string>

{

get{

varsystemTypeDict=newDictionary<string,string>();</string,string>

systemTypeDict.Add("34","image");

systemTypeDict.Add("35","text");

systemTypeDict.Add("36","uniqueidentifier");

systemTypeDict.Add("40","date");

systemTypeDict.Add("41","time");

systemTypeDict.Add("42","datetime2");

systemTypeDict.Add("43","datetimeoffset");

systemTypeDict.Add("48","tinyint");

systemTypeDict.Add("52","smallint");

systemTypeDict.Add("56","int");

systemTypeDict.Add("58","smalldatetime");

systemTypeDict.Add("59","real");

systemTypeDict.Add("60","money");

systemTypeDict.Add("61","datetime");

systemTypeDict.Add("62","float");

systemTypeDict.Add("98","sql_variant");

systemTypeDict.Add("99","ntext");

systemTypeDict.Add("104","bit");

systemTypeDict.Add("106","decimal");

systemTypeDict.Add("108","numeric");

systemTypeDict.Add("122","smallmoney");

systemTypeDict.Add("127","bigint");

systemTypeDict.Add("240-128","hierarchyid");

systemTypeDict.Add("240-129","geometry");

systemTypeDict.Add("240-130","geography");

systemTypeDict.Add("165","varbinary");

systemTypeDict.Add("167","varchar");

systemTypeDict.Add("173","binary");

systemTypeDict.Add("175","char");

systemTypeDict.Add("189","timestamp");

systemTypeDict.Add("231","nvarchar");

systemTypeDict.Add("239","nchar");

systemTypeDict.Add("241","xml");

systemTypeDict.Add("231-256","sysname");

returnsystemTypeDict;

}

}

}

}

3.写个同步数据库表结构schema：

publicvoidSyncDBSchema(stringserver,stringdbname,stringuid,stringpassword,

stringserver2,stringdbname2,stringuid2,stringpassword2)

{

DBUtilitydb=newDBUtility(server,dbname,uid,password);

DataSetds=db.ExecuteDS("SELECTsobjects.nameFROMsysobjectssobjectsWHEREsobjects.xtype='U'");

DataRowCollectiondrc=ds.Tables[0].Rows;

stringtest=string.Empty;

stringnewLine="";

foreach(DataRowdrindrc)

{

stringtableName=dr[0].ToString();

test+="ifNOTexists(select*fromsys.objectswherename='"+tableName+"'andtype='u')";

test+="CREATETABLE[dbo].["+tableName+"]("+newLine;

DataSetds2=db.ExecuteDS("SELECT*FROMsys.columnsWHEREobject_id=OBJECT_ID('dbo."+tableName+"')");

DataRowCollectiondrc2=ds2.Tables[0].Rows;

foreach(DataRowdr2indrc2)

{

test+="["+dr2["name"].ToString()+"]";

stringtypeName=SQLDBSystemType.systemTypeDict[dr2["system_type_id"].ToString()];

test+="["+typeName+"]";

stringcharLength=string.Empty;

if(typeName.Contains("char"))

{

charLength=(Convert.ToInt32(dr2["max_length"].ToString())/2).ToString();

test+="("+charLength+")"+newLine;

}

boolisIdentity=bool.Parse(dr2["is_identity"].ToString());

test+=isIdentity?"IDENTITY(1,1)":string.Empty;

boolisNullAble=bool.Parse(dr2["is_nullable"].ToString());

test+=(isNullAble?

"NULL,":"NOTNULL,")+newLine;

}

test+="CONSTRAINT[PK_"+tableName+"]PRIMARYKEYCLUSTERED";

stringprimaryKeyName=drc2[0]["name"].ToString();

test+=@"(

["+primaryKeyName+@"]ASC

)WITH(PAD_INDEX=OFF,STATISTICS_NORECOMPUTE=OFF,IGNORE_DUP_KEY=OFF,ALLOW_ROW_LOCKS=ON,ALLOW_PAGE_LOCKS=ON)ON[PRIMARY]

)ON[PRIMARY]"+newLine;

}

test="use["+dbname2+"]"+newLine+test;

DBUtilitydb2=newDBUtility(server2,dbname2,uid2,password2);

db2.ExecuteNonQueryForMultipleScripts(test);

}

privatevoidSyncDB_Click(objectsender,EventArgse)

{

stringserver="localhost";

stringdbname="testdb1";

stringuid="sa";

stringpassword="password1";

stringserver2="servername2";

stringdbname2="testdb2";

stringuid2="sa";

stringpassword2="password2";

try

{

SyncDBSchema(server,dbname,uid,password,server2,dbname2,uid2,password2);

MessageBox.Show("Donesyncdbschemasuccessfully!");

}

catch(Exceptionexc)

{

MessageBox.Show(exc.ToString());

}

}

注：这仅仅是做个简单的DBschema同步。还能够非常多地方要继续完好，例如，约束。双主密钥。外键等。。

版权声明：本文博客原创文章。博客，未经同意，不得转载。

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