在我的解决方案中,我有telerik报告,当试图在Visual Studio 2010设计器中打开它们时,我收到此错误:
Value cannot be null. Parameter name: instance
Call Stack
at System.ComponentModel.TypeDescriptor.AddAttributes(Object instance, Attribute[] attributes)
at Microsoft.VisualStudio.Design.VSDesignSurface.CreateDesigner(IComponent component, Boolean rootDesigner)
at System.ComponentModel.Design.DesignerHost.AddToContainerPostProcess(IComponent component, String name, IContainer containerToAddTo)
at System.ComponentModel.Design.DesignerHost.PerformAdd(IComponent component, String name)
at System.ComponentModel.Design.DesignerHost.System.ComponentModel.Design.IDesignerHost.CreateComponent(Type componentType, String name)
at System.ComponentModel.Design.Serialization.DesignerSerializationManager.CreateInstance(Type type, ICollection arguments, String name, Boolean addToContainer)
at System.ComponentModel.Design.Serialization.DesignerSerializationManager.System.ComponentModel.Design.Serialization.IDesignerSerializationManager.CreateInstance(Type type, ICollection arguments, String name, Boolean addToContainer)
at System.ComponentModel.Design.Serialization.TypeCodeDomSerializer.Deserialize(IDesignerSerializationManager manager, CodeTypeDeclaration declaration)
at System.ComponentModel.Design.Serialization.CodeDomDesignerLoader.PerformLoad(IDesignerSerializationManager manager)
at Microsoft.VisualStudio.Design.Serialization.CodeDom.VSCodeDomDesignerLoader.PerformLoad(IDesignerSerializationManager serializationManager)
at Microsoft.VisualStudio.Design.Serialization.CodeDom.VSCodeDomDesignerLoader.DeferredLoadHandler.Microsoft.VisualStudio.TextManager.Interop.IVsTextBufferDataEvents.OnLoadCompleted(Int32 fReload)
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当我运行解决方案时,它们正在出现并且它们很好.所以,唯一的问题是设计师和这个错误.
提前致谢.
我需要计算并显示报告中分组数据的行数.我已经在Report Footer部分中有总数据行数(我使用了Count()函数并且工作正常),但是我需要在Group Footer部分中显示总行数,这些行显示了分组数据的行数.问题的可见解释如下所示.
谢谢.
----------------------------------------------------
Group 1
row 1---------------------------
row 2---------------------------
.
.
.
row N---------------------------
--- I need here number of rows!---------------------
----------------------------------------------------
Group 2
row 1---------------------------
row 2---------------------------
.
.
.
row M---------------------------
--- I need here number of rows!---------------------
----------------------------------------------------
Total Rows: M+N
Run Code Online (Sandbox Code Playgroud) 成功部署并执行 Ola Hallengren SQL 维护脚本后,我发现了这个,但它不起作用。那么还有其他方法可以做到这一点吗?
我有服务器和客户端控制台应用程序,它们可以正常通信并发送一些字符串。这是代码...
服务器
public static void Main()
{
try
{
IPAddress ipAd = IPAddress.Parse("127.0.0.1");
/* Initializes the Listener */
TcpListener myList = new TcpListener(ipAd, 1234);
/* Start Listeneting at the specified port */
myList.Start();
Console.WriteLine("The server is running at port 8001...");
Console.WriteLine("The local End point is :" + myList.LocalEndpoint);
Console.WriteLine("Waiting for a connection.....");
Socket s = myList.AcceptSocket();
Console.WriteLine("Connection accepted from " + s.RemoteEndPoint);
byte[] b = new byte[100];
int k = s.Receive(b);
Console.WriteLine("Recieved...");
for (int i = 0; i < k; …
Run Code Online (Sandbox Code Playgroud) 在我的解决方案中,我正在导入用作参考的外部项目。在编码和设置 Release x64(在标准工具箱中)后,我遇到了构建问题。问题肯定与 x64/x86 配置有关。当我也转到解决方案和项目的属性时,除我的项目外,所有这些属性都设置为 x64。最后,问题是我不能选择x64。有没有人遇到过这种问题?错误信息是:
无法加载文件或程序集...尝试加载格式不正确的程序 (System.BadImageFormatException)
预告也在这里...
我有两个清单:
List A List B
ID FirstName WorkingID ID FirstName WorkingID
5 John Null 5 John 1
9 Patrick Null 9 Patrick 2
16 Ryan Null 16 Ryan 3
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我想使用LINQ比较这些列表,如果两个列表中的ID相等,我想在第一个列表中设置WorkingID,一个列表.谢谢.
我需要替换List <>类,其中我将有4个方法...两个用于添加int
项目,一个来自前面,另外一个来自后面,两个用于删除,一个来自前面,另一个来自后面.我的班级不应该继承任何东西.
像这样......
public class MyList
{
public void AddItemsFront(int pItem)
{
}
public void AddItemsBehind(int pItem)
{
}
public void DeleteItemsFront(int pItem)
{
}
public void DeleteItemsBehind(int pItem)
{
}
}
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