过去一周我一直坚持这一点,如果你们能够提供帮助,我将非常高兴。无法在MS Visual Studio 2010中执行ConnectionString
我正在与MS视觉工作室2010 vb工作。我目前有一个名为“app_data”的asp.net文件夹下的数据库。
我想通过web.config文件执行connectionString命令。
Web配置:
<connectionStrings>
<add name="mysqlcon" connectionString="Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\public.mdf;Integrated Security=True;User Instance=True"
providerName="System.Data.SqlClient" />
</connectionStrings>
主要代码:
Dim a As String = ConfigurationManager.ConnectionStrings("mysqlcon").ConnectionString
Dim conn As New MySqlConnection(a)
Try
conn.Open()
MsgBox("good")
conn.Close()
Catch ex As MySqlException
MsgBox(ex.Message)
Finally
conn.Dispose()
End Try
,我发现了以下错误(10号线被聚焦):
Server Error in '/MP' Application.
Keyword not supported.
Parameter name: attachdbfilename
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.ArgumentException: Keyword not supported.
Parameter name: attachdbfilename
Source Error:
Line 8: Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
Line 9: Dim a As String = ConfigurationManager.ConnectionStrings("mysqlcon").ConnectionString
Line 10: Dim conn As New MySqlConnection(a)
Line 11:
Line 12:
Stack Trace:
[ArgumentException: Keyword not supported.
Parameter name: attachdbfilename]
MySql.Data.MySqlClient.MySqlConnectionStringBuilder.ValidateKeyword(String keyword) +108
MySql.Data.MySqlClient.MySqlConnectionStringBuilder.set_Item(String keyword, Object value) +18
System.Data.Common.DbConnectionStringBuilder.set_ConnectionString(String value) +185
MySql.Data.MySqlClient.MySqlConnection.set_ConnectionString(String value) +289
MySql.Data.MySqlClient.MySqlConnection..ctor(String connectionString) +26
test.Button1_Click(Object sender, EventArgs e) in C:\Users\God\Desktop\VB\MP\test.aspx.vb:10
System.Web.UI.WebControls.Button.OnClick(EventArgs e) +118
System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +112
System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +10
System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13
System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +36
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +5563
会很高兴,如果你们可以帮忙。
嗨Renan,谢谢。我也尝试过(我做了很多谷歌搜索,使我在你提供的链接上登陆)。代码将返回错误“无法连接到任何指定的mysql主机” – Wilson 2013-02-14 23:23:21
Wilson,是您的数据库mySql?如果是,请尝试以下操作: Server = yourServerAddress; Database = yourDataBase; Uid = yourUsername; Pwd = yourPassword; 而且我会建议你改变你的数据库名称。使用少一些通用的。 – 2013-02-15 11:34:35