c#-4.0

问题 I have strange problem. I have 3 forms. form1, form2, form3. form1 is starting/main form. in form1 I have code: form2 f2 = new form2; f2.ShowDialog(); form2 opens, I can't focus on foorm1, they are both on the same thread. Just what I want. On form2 I have code: form3 f3 = new form3; DialogResult result = f3.ShowDialog(); I run this code and... For some, unknown for me reason this form3 runs on new thread and I can focus on form2. I don't want this to happen. I have no idea why this form3

问题 I have strange problem. I have 3 forms. form1, form2, form3. form1 is starting/main form. in form1 I have code: form2 f2 = new form2; f2.ShowDialog(); form2 opens, I can't focus on foorm1, they are both on the same thread. Just what I want. On form2 I have code: form3 f3 = new form3; DialogResult result = f3.ShowDialog(); I run this code and... For some, unknown for me reason this form3 runs on new thread and I can focus on form2. I don't want this to happen. I have no idea why this form3

问题 I have a foreach loop which works Well . But I want to implement TPL , so did the following: Parallel.ForEach(fileList, currentfileItem => { _clientContext.Load(currentfileItem, w => w.File); _clientContext.ExecuteQuery(); if (currentfileItem.File == null) { throw new Exception( String.Format("File information not found for the item {0}", currentfileItem.DisplayName)); } var currentFileName = currentfileItem.File.Name; if (!string.IsNullOrEmpty(docRevVersionId)) { var info = Microsoft

问题 I have written a simple user defined function in C# that gets the IP address and returns host name against it code is as follows: public partial class UserDefinedFunctions { [Microsoft.SqlServer.Server.SqlFunction] public static SqlString getname(String ipAddress) { System.Data.SqlClient.SqlClientPermission pSql = new SqlClientPermission(System.Security.Permissions.PermissionState.Unrestricted); pSql.Assert(); System.Security.PermissionSet psql1 = new PermissionSet(System.Security.Permissions

问题 I have written a simple user defined function in C# that gets the IP address and returns host name against it code is as follows: public partial class UserDefinedFunctions { [Microsoft.SqlServer.Server.SqlFunction] public static SqlString getname(String ipAddress) { System.Data.SqlClient.SqlClientPermission pSql = new SqlClientPermission(System.Security.Permissions.PermissionState.Unrestricted); pSql.Assert(); System.Security.PermissionSet psql1 = new PermissionSet(System.Security.Permissions

问题 I have written a simple user defined function in C# that gets the IP address and returns host name against it code is as follows: public partial class UserDefinedFunctions { [Microsoft.SqlServer.Server.SqlFunction] public static SqlString getname(String ipAddress) { System.Data.SqlClient.SqlClientPermission pSql = new SqlClientPermission(System.Security.Permissions.PermissionState.Unrestricted); pSql.Assert(); System.Security.PermissionSet psql1 = new PermissionSet(System.Security.Permissions

问题 The method set_UserActiveEnvironments() in HttpContextHelper.cs stores a non-serializable object as an HttpSessionState attribute on line 47, which can damage application reliability By default, ASP.NET servers store the HttpSessionState object, its attributes and any objects they reference in memory. This model limits active session state to what can be accommodated by the system memory of a single machine. In order to expand capacity beyond these limitations, servers are frequently

问题 The method set_UserActiveEnvironments() in HttpContextHelper.cs stores a non-serializable object as an HttpSessionState attribute on line 47, which can damage application reliability By default, ASP.NET servers store the HttpSessionState object, its attributes and any objects they reference in memory. This model limits active session state to what can be accommodated by the system memory of a single machine. In order to expand capacity beyond these limitations, servers are frequently

问题 I have a string as follows: string str = "ssmmmjjkkkkrrr" Using C#, I need to display the count of each individual character as follows: s = 2 m = 3 j = 2 k = 4 r = 3 Thanks in advance. 回答1: The simplest way would be to use LINQ: var counted = text.GroupBy(c => c) .Select(g => new { g.Key, Count = g.Count() }); foreach (var result in counted) { Console.WriteLine("{0} = {1}", result.Key, result.Count); } Or even more briefly: foreach (var group in text.GroupBy(c => c)) { Console.WriteLine("{0}

问题 I have a string as follows: string str = "ssmmmjjkkkkrrr" Using C#, I need to display the count of each individual character as follows: s = 2 m = 3 j = 2 k = 4 r = 3 Thanks in advance. 回答1: The simplest way would be to use LINQ: var counted = text.GroupBy(c => c) .Select(g => new { g.Key, Count = g.Count() }); foreach (var result in counted) { Console.WriteLine("{0} = {1}", result.Key, result.Count); } Or even more briefly: foreach (var group in text.GroupBy(c => c)) { Console.WriteLine("{0}