指定的架构无效。错误：Model.ssdl（2,2）：错误0152：找不到具有不变名称“MySql.Data.MySqlClient”的ADO.NET提供程序的实体框架提供程序。确保提供程序已在应用程序配置文件的“entityFramework”部分中注册。有关详细信息，请参阅http://go.microsoft.com/fwlink/?LinkId=260882。
尝试在Visual Studio 2013设计器中打开Form时出现此错误。 我在表单上有一个WindowsForms Usercontrol，我使用EF上下文访问数据库。有趣的是代码功能正常，但我无法访问表单设计器。
用户控制代码
namespace DipCom.UserControls
{
public partial class CasesControl : UserControl
{
public vizualizaceEntities context;
public CasesControl()
{
InitializeComponent();
context = new vizualizaceEntities();
restartListbox();
}
/// <summary>
/// Method for filling case listbox
/// </summary>
public void restartListbox()
{
cases fil = new cases();
listBoxCases.ValueMember = "name";
listBoxCases.DataSource = context.cases.ToList();
}
/// <summary>
/// Creates new case and add it to database.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void buttonNew_Click(object sender, EventArgs e)
{
if(textBoxName.ReadOnly==true)
{
clearTextBoxes();
TBReadOnly(false); // readonly off
EnableButtons(false, false, true, false); // others buttons off
}
else
{
cases newcase = new cases(textBoxName.Text, textBoxDescription.Text, textBoxReqNumber.Text); // crating new case
context.cases.Add(newcase);
context.SaveChanges();
//
EnableButtons(true,true,true,true);// enable all buttons
TBReadOnly(true);
clearTextBoxes();
restartListbox();
}
}
/// <summary>
/// Enables or disables 3 textboxes in dependency on true/false par
/// </summary>
/// <param name="par"></param>
private void TBReadOnly(bool par)
{
textBoxName.ReadOnly = par;
textBoxReqNumber.ReadOnly = par;
textBoxDescription.ReadOnly = par;
}
/// <summary>
/// Enables or disables buttons - each button has own bool parameter
/// </summary>
/// <param name="del"></param>
/// <param name="change"></param>
/// <param name="nevv"></param>
/// <param name="chose"></param>
private void EnableButtons(bool del, bool change, bool nevv, bool chose) {
buttonDelete.Enabled = del;
buttonChange.Enabled = change;
buttonNew.Enabled = nevv;
buttonChose.Enabled = chose;
}
/// <summary>
/// Clear All textboxes
/// </summary>
private void clearTextBoxes()
{
textBoxDescription.Clear();
textBoxName.Clear();
textBoxReqNumber.Clear();
}
/// <summary>
/// Changes properties of selected case.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void buttonChange_Click(object sender, EventArgs e)
{
if (textBoxName.ReadOnly == true)
{
TBReadOnly(false);
EnableButtons(false, true, false, false);
}
else
{
cases selected = (cases)listBoxCases.SelectedItem;
selected.changeCase(textBoxName.Text, textBoxDescription.Text, textBoxReqNumber.Text);
context.SaveChanges();
TBReadOnly(true);
EnableButtons(true,true,true,true);
restartListbox();
}
}
private void listBoxCases_SelectedValueChanged(object sender, EventArgs e)
{
if ( listBoxCases.SelectedItem != null)
{
cases selected= (cases)listBoxCases.SelectedItem;
textBoxName.Text = selected.name.ToString();
textBoxReqNumber.Text = selected.reg_number.ToString();
textBoxDescription.Text = selected.description.ToString();
}
}
/// <summary>
/// Deletes selected case
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void buttonDelete_Click(object sender, EventArgs e)
{
DialogResult dialogResult = MessageBox.Show("Jste si jistý, že chcete smazat případ?", "Smazat případ?", MessageBoxButtons.YesNo);
if (dialogResult == DialogResult.Yes)
{
cases selected = (cases)listBoxCases.SelectedItem;
context.cases.Remove(selected);
context.SaveChanges();
restartListbox();
}
else if (dialogResult == DialogResult.No)
{
}
}
}
}
App.config文件如下。在我看来，问题可能在那里，但我不知道在哪里。
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<configSections>
<!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
<section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
</configSections>
<startup>
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" />
</startup>
<entityFramework codeConfigurationType="MySql.Data.Entity.MySqlEFConfiguration, MySql.Data.Entity.EF6">
<defaultConnectionFactory type="System.Data.Entity.Infrastructure.SqlConnectionFactory, EntityFramework" />
<providers>
<provider invariantName="MySql.Data.MySqlClient" type="MySql.Data.MySqlClient.MySqlProviderServices,
MySql.Data.Entity.EF6" />
<provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices,
EntityFramework.SqlServer" />
</providers>
</entityFramework>
<system.data>
<DbProviderFactories>
<remove invariant="MySql.Data.MySqlClient" />
<add name="MySQL Data Provider" invariant="MySql.Data.MySqlClient" description=".Net Framework Data Provider for MySQL" type="MySql.Data.MySqlClient.MySqlClientFactory, MySql.Data, Version=6.9.5.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d" />
</DbProviderFactories>
</system.data>
<runtime>
<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
<dependentAssembly>
<assemblyIdentity name="MySql.Data" publicKeyToken="c5687fc88969c44d" culture="neutral" />
<bindingRedirect oldVersion="0.0.0.0-6.9.5.0" newVersion="6.9.5.0" />
</dependentAssembly>
</assemblyBinding>
</runtime>
<connectionStrings>
<add name="vizualizaceEntities" connectionString="" providerName="System.Data.EntityClient"/>
</connectionStrings>
</configuration>
从Nuget导入包。
有人知道问题可能是什么？谢谢你的帮助。