c#.net VS2010中的数据库连接
本文关键字:数据库连接 VS2010 net | 更新日期: 2023-09-27 18:26:20
我正在尝试使用数据集连接到.net中的数据库。我的代码是为工作簿创建者编写的。该方法从数据库中提取问题,并将其放入列表中。当我运行代码时,我会得到下一个错误:
System.ArgumentException was unhandled by user code
Message=Format of the initialization string does not conform to specification starting at index 103.
Source=System.Data
StackTrace:
at System.Data.Common.DbConnectionOptions.GetKeyValuePair(String connectionString, Int32 currentPosition, StringBuilder buffer, Boolean useOdbcRules, String& keyname, String& keyvalue)
at System.Data.Common.DbConnectionOptions.ParseInternal(Hashtable parsetable, String connectionString, Boolean buildChain, Hashtable synonyms, Boolean firstKey)
at System.Data.Common.DbConnectionOptions..ctor(String connectionString, Hashtable synonyms, Boolean useOdbcRules)
at System.Data.OleDb.OleDbConnectionString..ctor(String connectionString, Boolean validate)
at System.Data.OleDb.OleDbConnectionFactory.CreateConnectionOptions(String connectionString, DbConnectionOptions previous)
at System.Data.ProviderBase.DbConnectionFactory.GetConnectionPoolGroup(String connectionString, DbConnectionPoolGroupOptions poolOptions, DbConnectionOptions& userConnectionOptions)
at System.Data.OleDb.OleDbConnection.ConnectionString_Set(String value)
at System.Data.OleDb.OleDbConnection.set_ConnectionString(String value)
at System.Data.OleDb.OleDbConnection..ctor(String connectionString)
at System.Data.OleDb.OleDbDataAdapter..ctor(String selectCommandText, String selectConnectionString)
at bookPage.getPageDB() in c:'Users'asaf_pearl'Documents'Visual Studio 2010'WebSites'bookreator'App_Code'question.cs:line 188
at book.Page_init(Object sender, EventArgs e) in c:'Users'asaf_pearl'Documents'Visual Studio 2010'WebSites'bookreator'book.aspx.cs:line 23
at System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e)
at System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e)
at System.Web.UI.Control.OnInit(EventArgs e)
at System.Web.UI.Page.OnInit(EventArgs e)
at System.Web.UI.Control.InitRecursive(Control namingContainer)
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
InnerException:
代码是:
public void getPageDB( )
{
string ConnStr = "Provider=Microsoft.ACE.OLEDB.12.0;Data
Source=C:''Users''asaf_pearl''Documents''Visual Studio
2010''WebSites'bookreator''App_Data/bookretorDB1.accdb" + ";";
string myQuery = "select from fivebaloons where page=1";
OleDbDataAdapter oda = new OleDbDataAdapter (myQuery, ConnStr);
DataSet ds = new DataSet();
oda.Fill(ds);
foreach(DataRow pRow in ds.Tables[0].Rows){
_currentQuest.question=pRow["question"].ToString();
_currentQuest.questionNumber =Convert.ToInt16( pRow["questionnumber"]);
_currentQuest.rightAnswer=pRow["answerswer"].ToString();
_currentQuest.goodFeedBack=pRow["goodfeedback"].ToString();
_currentQuest.badFeedBack1=pRow["badfeedback1"].ToString();
_currentQuest.badFeedBack2=pRow["badfeedback2"].ToString();
AllQuestions.Add(_currentQuest);
}
}
你能告诉我怎么了吗?(在另一个代码中它正在工作)
它会告诉您错误在哪里:初始化中的索引103,即连接字符串。
初始化字符串的格式不符合从索引103开始的规范。。。
你的问题中的代码格式不允许精确计数字符,但很可能是因为你在中使用了一个反斜杠(而不是像其他地方一样使用转义的反斜杠)
string connStr = "... WebSites'bookreator ...";
将其更改为
string connStr = "... WebSite''bookreator ...";
注意:这个片段"App_Data/bookretorDB1.accdb
"中的(正向)斜杠应该是可以的,因为Windows API通常也接受它作为目录分隔符。至少为了保持一致性,您可能还需要在此处使用''
。
尝试写入类似的连接字符串
string constr = string.Format( "Data Source={0};Initial Catalog={1};Integrated Security=SSPI", YourServerName,YourDatabaseName);