indexoutofrangeexception

问题 I have some code and when it executes, it throws a IndexOutOfRangeException , saying, Index was outside the bounds of the array. What does this mean, and what can I do about it? Depending on classes used it can also be ArgumentOutOfRangeException An exception of type 'System.ArgumentOutOfRangeException' occurred in mscorlib.dll but was not handled in user code Additional information: Index was out of range. Must be non-negative and less than the size of the collection. 回答1: What Is It? This

问题 The exact error: Index was out of range. Must be non-negative and less than the size of the collection. I've index arrays and lists countless times. I've used for loops with arrays and lists countless times. The data is there, it works. Except when I try to create a task for my function. Mind you, I successfully did this with a foreach loop for a similar function; this new one requires two arguments though, so I can't use a foreach loop properly. At least I don't think I can. Here is the

问题 I'm reading back a bit value from an SQL table, and casting as a boolean value to map to a boolean model value. But when I read back the IsPDLChecked bit field and initialise as false, I get an index out of range exception . I looked up the definition of the exception and I'm not sure why the value is out of range due to it being init with a false value , ie, 0 . So it's not a negative range value. Question: Why am I getting an IndexOutOfRange exception although the bit value being read back

问题 I keep getting subscript out of range for the following code, I'm new to VBA so would greatly appreciate your help. I'm trying to reference a table that contains various source workbooks and copy the data from here to "target" workbooks also contained in the sTable range. Thanks, Ronan Sub Import() Dim sTable As String ' Source table Dim sTarget As String ' Target range for output Dim sHeader As String ' Header row from the input data Dim sFileName As String ' File name to read from Dim

问题 I was trying to extract even lines from a text file and output to a new file. But with my codes python warns me "list index out of range". Anyone can help me? THANKS~ Code: f = open('input.txt', 'r') i = 0 j = 0 num_lines = sum(1 for line in f) newline = [0] * num_lines print (num_lines) for i in range(1, num_lines): if i % 2 == 0: newline[i] = f.readlines()[i] print i, newline[i] i = i + 1 f.close() f = open('output.txt', 'w') for j in range(0,num_lines): if j % 2 == 0: f.write(newline[j] +

问题 I am using the following code to read values from an Excel spreadsheet: // Start with passed int lastPassRow = sheets[passedVehicles].GetLength(0); for (int i = 1; i < lastPassRow; i++) { // Exception here if(DateTime.TryParse(sheets[passedVehicles][i, 0].ToString(), out result)) { passedDates.Add((DateTime)sheets[passedVehicles][i, 0]); } } The type of sheets[passedVehicles] is a multidimensional array of Object[,] and the for loop above is giving me an IndexOutOfRange exception at i = 1,

问题 Let's say we have two dictionaries with the following key pair values: Dictionary 1 : [ {1,abc} {2,cde} {3,efg} ] Dictionary 2: [ {1,123} {2,234} {3,345} ] I want to create a dictionary as follows: Dictionary 3 : [ {abc,123} {cde,234} {efg,345} ] fieldValues = new List<List<string>>(); docFieldKey = new List<List<string>>(); docFieldValueDict = new Dictionary<string, List<string>>(); docKeyDict = new Dictionary<string, List<string>>(); iterateDocKeyDict = new List<string>();

问题 I am trying to create a program to randomly generate every question from a topic for my GCSE revision. My code generates an error message after a random question. Here is my code followed by the error message: computing_UNIT4_networks = (["LOCAL AREA NETWORK","A network in one geographical area."],["WIDE AREA NETWORK","A network spanning two or more geographical areas."],["ROUTER","Connects a network to another network, sends and inspects packets of data."],["SWITCH","Channels data to its

问题 I need help for finalize my code in Swift 4: I want to shuffle my questions array, but it always crashes after one time and shows this message: "Fatal error: Index out of range". Here is my code: class ThirdViewController: UIViewController { var questions = ["A", "B", "C", "D", "E"] var answers = [["1","2","3"],["2","1","3"],["3","2","1"],["1","3","2"],["2","3","1"]] // Variables var rightAnswerPlacement:UInt32 = 0 var shuffled = [String](); let randomNumber = Int(arc4random() % 5) // Label

问题 I have some code and when it executes, it throws a IndexOutOfRangeException , saying, Index was outside the bounds of the array. What does this mean, and what can I do about it? Depending on classes used it can also be ArgumentOutOfRangeException An exception of type 'System.ArgumentOutOfRangeException' occurred in mscorlib.dll but was not handled in user code Additional information: Index was out of range. Must be non-negative and less than the size of the collection. 回答1: What Is It? This