foreach (DataGridViewRow row in dgv.Rows){
if (string.IsNullOrEmpty(row.Cells["QtyOnHand"].Value.ToString())){
row.Cells["QtyAvailable"].Value =
Convert.ToInt32(row.Cells["QtyOnHand"].Value) -
Convert.ToInt32(row.Cells["QtyOnHold"].Value) -
Convert.ToInt32(row.Cells["QtySold"].Value) -
Convert.ToInt32(row.Cells["QtyAvailable"].Value);
}
}
The problem is when any of the value on the right side of the equation is null, the whole equation is invalid. I need to replace the null values by 0 on the fly so that it can be calculated. Note that I do not want to actually replace the null values in the second and third columns of the table, just replace it in the equation whenever it applies to make the calculation work.
I am looking at one of the functions of an exercise:
void escape(char * s, char * t) { int i, j; i = j = 0; while ( t[i] ) { /* Translate the special character, if we have one */ switch( t[i] ) {
[code]...
Notice the while loop evaluates the current value in t to true or false. When we hit the null terminator, does that get evaluated as 0 and hence evaluates as a falsy value so the while loop exits?
When you login to my site my loginservice which is done by ajax and json make a session called context.Session["Name"]. With BreakPoints it shows that everything is good and the variables are in place. However when I use Session["Name"] it comes out as null.
I will add my code at the bottem not
using System; using System.Collections.Generic; using System.Linq;
Basically, the task is to replace tabs with spaces, ensuring that the number of spaces is appropriate to get you to the next tab stop (i.e. if you were only 4 spaces away from a tab stop, don't replace the tab with 8 spaces).i've seen have included character arrays, and many have included multiple functions. I realize the text says "these exercises suggest programs of somewhat greater complexity than the ones earlie in this chapter," but it seemed like a very straightfortward task.Have i oversimplified or something?
Code:
#include <stdio.h> #define TAB_STOP 8 int main() { int c, i; }
I am new to C, but I recently completed an exercise from a book that finds a string in another string, removes the string, and replaces it with another string.
I have an open file dialog that opend the xml file and store the path to the textbox, it returns the path correctly but when i need to store that xml file into the database it tells me that there is an error next to '' because when i try to debug it it gives me "C:\Student Results\FC2015.xml" this results then it breaks. here is my code:
I have a challenge to replace all the words "you" in a sentence that is entered by a user to "u". I have got this working but my code is also changing yourself to urself which it should not be doing.
i would like to know how to replace a value with the variable that ii is equal, i mean like a=5 i want to be able to replace the number 5 by the letter a when needed in printf. ofc i want to use this for an actual purpuse and meaning what i gave was a mere example and thxx. BTW DONT jUst DROP a few lines of code that would make it work
I'm having a bit of problem. I've set the string 'Absent' to all student in a file. However, I want to replace 'Absent' with 'present' when the correct ID assigned to a student is entered. In other words, 'Absent' will only change to 'Present' for a specific person at a time. I'm not sure how to implement this
I'm learning internet sockets right now and to that end I've made a simple client/server chat program centered around select(). I've got it to where multiple messages can be sent and received on either side and the "prompt" will move down 1 line each time accordingly.
My only sticking point is when someone is in the middle of typing a message and a new message is received. The message they are currently typing is going to be deleted, so they'll have to start over again. What I want to do is grab the current contents of the stdin buffer (meaning, there's no ), save it, print the received message and move the prompt downward as usual, and then put that saved message back into the buffer, meaning not only is it back on the screen now, it's erasable too as if nothing ever happened.
I know that this will definitely be some very very non-standard C, and that's fine. To that end, I've read that curses, GNU readline, and termios are possibilities for this. I've tried those, but am having trouble making it work.
This will be a moot point when I put a GUI on it soon (probably wx, but maybe Qt) since it won't even be an issue, but I'm determined to make this work. Both systems (the "client" and the "server") are Linux, one being Ubuntu and one being Debian.
My text file have 220 663 lines and 858 995 characters (I used Linux commands : wc to count them. If I use array to store data, I think it's too large array. But if use fstream, I dont know to access each element in stream to compare and replace. I dont know How many labels such as: A1, C- A1, AM- MNR... which I have to replace.
To replace a string in my file with another. The file contents look like the following:
abc 123 0
"abc"= The username "123"= Their password "0"= The amount in their bank
I want to change their bank amount.
But, it isn't working, nor is it even giving me an error code.
// When the user logs out, make changes to their bank string strNew = std::to_string(player.bank); // String representation of the revised player bank ifstream filein("user_accounts.txt"); // Old repository of player data ofstream fileout("user_accounts_new"); // New repository of player data
Method which i use to Webrequest requests doing the job well but very slow i need to wait on every foreach item finish a lot of time. I run Execute method inside foreach statement unfortunately it takes a lot of time. I would like to convert it to asynchronous.
//this is in foreach statment and call for every request public static void Execute(string xmlFileRequest, string xmlFileResult, string InventoryElement, string TimeOutFile, Server server) { HttpWebRequest request = (HttpWebRequest)WebRequest.Create(server.ServerIP); request.Headers.Add(@"SOAP:Action"); request.ContentType = "text/xml;charset="utf-8"";
[Code] ....
Unfortunately i got error (Webrequest timed out)on that line:
using (Stream stream = request.GetRequestStream()) { soapEnvelopeXml.Save(stream); }
This is strange because i know for some elements i am expecting timeouts and i am getting them - but if they are then the line which is occuring should be: (this is without my tries) and that should be :
using (WebResponse response = request.GetResponse())
Then I am saving that element to
`sw.WriteLine(InventoryElement);` inside catch.
So the code is working ok in case my code before tries.
I am a beginner of c#.. i have try to made a windows notepad and face some issues. I want to add find string from open file... and also want to replace it with a new string... Is there any simple and easy solution to this problem??
I want to remove some character in my file. too i want to replace some char to another. I know the easiest way for this job is we write final text in file. i mean we first produce sightly text then write it in file . I don't want use of temporary string.
I have generated a 10x10 integer matrix, by way of a 2 dimensional array, the elements are randomly generated and lie on 1 <= z <= 5. I am in need of an efficient method of setting all adjacent "duplicates" (repeating elements) of length 3 or greater to the integer six (6). The source for the brute method follows for clarity.
