C Sharp :: Datagrid Error When Selecting A Header
Jun 5, 2012
I have the following code in the cellmouse event to get information from a selected row.
private void dt_Grid_CellMouseClick(object sender, DataGridViewCellMouseEventArgs e)
{
datagrid.Rows[0][0] = dt_Grid.Rows[e.RowIndex].Cells[0].Value.ToString();
datagrid.Rows[0][1] = dt_Grid.Rows[e.RowIndex].Cells[1].Value.ToString();
datagrid.Rows[0][2] = dt_Grid.Rows[e.RowIndex].Cells[2].Value.ToString();
[Code]...
but when i select a collumn, i recive an error because i'm selecting a cell with the mouse and i dont have code for that selection. My question is how can i put an "if" on the beguining of the event so that he can determine if it's a header or not.
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Apr 17, 2012
How do I order the value of the selected cell in a datagrid to textbox in another form
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May 7, 2012
In my WPF application I created a LINQ to SQL entities class. Then I created a partial class and there add code to my entity class. Below is the code of it:
namespace Mynamespace {
partial class rts_index {
#region Fields
/// <summary>
/// Status:
/// "Selected" - true, "Unselected" - false.
/// </summary>
private bool _is_selected;
[code]....
Then I executed LINQ to SQL. Works perfectly well. Then I bound WPF Datagrid radiobutton column to is_selected property of the partial class. Below is XAML code:
.
.
.
<Window.Resources>
<CollectionViewSource x:Key="rts_indexViewSource" d:DesignSource="{d:DesignInstance my:rts_index, CreateList=True}" />
</Window.Resources>
[code]....
And here I have the problem. When I'm changing the radiobutton status from Unchecked to Checked it doesn't change the value of is_selected property from false to true in the partial class. I don't know why.
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Sep 8, 2014
Cannot manage to find the error source when i try running the program, the first part of the program runs just fine its when i try to get the temperature one that i get the error
#include <iostream>
#define pi 3.141592
using namespace std;
int main() {
double r, h; //declare variables for radious and height
double Surfacearea;
[code]....
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May 18, 2014
I'm trying to compile this code which is a header file.
#ifndef CUBEMAP_H_INCLUDED
#define CUBEMAP_H_INCLUDED
#include "Texture.h"
#include <string>
class CubeMap : Texture {
[Code] ....
But I get the following error:
|9|error: expected ')' before 'Directory'|
How can i resolve this?
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Dec 1, 2014
Was missing the '.s'
I'm getting this error in the 'my_free' function here "bp->s.size += p->s.ptr->s.size;" and "p->s.size += bp->s.size;" here. This doesn't make sense to me because it seems to be the correct way to access the union, and In the "my_malloc" function I use a similar call "p->s.size = nunits;" and that works fine.
// gcc -o malloctest -Wall -g -ldl main.c
// ./malloctest
#include <stdbool.h>
[Code].....
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Aug 11, 2012
We have a midi.cpp which includes midi_synth.h.
this h file declares a class and this class inlines a open method.
Now the linker doesn't recognize this open method when called by another method inside midi.cpp.
What would I do?
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Oct 11, 2014
I'm trying to print a single linked list backward with functions/classes. I have created the main file and 3 header files. But I'm getting an error on one of the header files, linkedListIterator after adding #include "linkedListType.h". It says that "linkedLlistType.h" is calling itself. And when I try to run it, I get an error of "too many header files." I have tried changing the headers many times, but nothing seems to work.
.cpp file:
/*(Printing a single linked list backward) Include the functions reversePrint and recursiveReversePrint, as discussed in this chapter, in the class linkedListType. Also, write a program function to print a (single) linked list backward. (Use either the class unorderedLinkedList or the class orderedLinkedList to test your function.)*/
#include "linkedListType.h"
#include "orderedLinkedList.h"
#include "linkedListIterator.h"
#include <iostream>
using namespace std;
struct nodeType
[Code] ....
header files:
[URL] .... (error in this header file)
[URL] ....
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Jul 16, 2013
I have N vectors which look like this:
[1→m] [m+1→2m] [2m+1→3m] [3m+1→4m] [4m+1→5m]..... [{(N-1)m}+1→Nm]
I want to select 1 element from each vector without duplication of any combinations.
Essentially only when all combinations are done with 1st element in first vector ,only then it should move to next element in first vector say i have elements :[123] [456] [789]
my combinations should be like
147
148
149
157
158
159
167
168
169
247….
Also, i need no repetitions and only after all combinations of 1 are done only then the loop has to move to next combination ie 247 combination and so on.
i tried NCK (n choose k) command but it gave me random combinations.how should i go about it with using minimal for loops
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Dec 14, 2014
it's not my primary language, so my code variables are in my language.
Code:
FILE *eng;
eng = fopen("eng.txt", "r");
if(eng == NULL){
[Code]....
fclose(eng); It's a piece of my code. Some explanation: From file, where is full of words under selves. I cut it on word and from word i'm printing:
1) word
2) how many letters in the word
3) word backwards and
4) viz. problem is down
For first: There i have warning: while(feof(eng) == NULL); like (comparison between pointer and integer) i don't get it. For second i have a big problem. I must from every word print the most recurring character.
For example: nondeterministically -> the most are N and I. And if, there is more then one most reccuring char, you choose one of them.
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Jul 14, 2014
I have to write a program that selects a random color from an array. I used the srand (time(0)); statement but it still gives me the same color each time. Here is my code.
// Color.cpp
#include <ctime>
#include <iostream>
using namespace std;
#include <string>
#include <cstdlib>
#include "Color.h"
[Code] .....
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Jan 21, 2015
I am looking into some design pattern which works for validation.
I thought about using strategy but not sure whether its correct or not
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Oct 19, 2014
I want to copy the word entered by a user as soon as the user presses space(Just like the spell checker in word editors do). I'm using the following code:
private void ThisAddIn_Startup(object sender, System.EventArgs e) {
ConsoleKeyInfo info = Console.ReadKey();
if (info.KeyChar == ' ') {
Word.Range rng = this.Application.ActiveDocument.Words.Last;
[Code] .....
I'm getting the following error: An exception of type 'System.InvalidOperationException' occurred in mscorlib.dll but was not handled in user code. For the following line:
ConsoleKeyInfo info = Console.ReadKey();
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Apr 12, 2014
I am working on an assignment in which i have to perform th following task
myClass itsObject1,itsObject2;
itsObject2=5000+itsObject1;
I have defined overloaded operator as follows in the header file but in the cpp file of the class it gives error.
friend vli &vli::operator + (int &a,vli &obj);
How to define it in cpp file of my class?
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Sep 10, 2013
Supposing you have a 3 or more overlapping arrays (arrays having elements in common), and you wish to select 2 or more of the arrays with the maximum number of elements but less overlap as compared to the rest of the overlapping arrays.
Eg. A[4],B[6],C[5]. A+B contains 10 elements but say the overlapping element is 3, meaning it has 7 unique element.
Also B+C=11 elements , but supposing it has 5 overlaps, it would mean it has only 6 unique elements. A+B+C=15. Supposing the overlaps are 11 then it means the unique elements are 4. Ect. So per the example, the best array options with most unique element would be A+B .
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Jan 27, 2014
I'm writing a Hotel magmt app. I'm having difficulty on how to implement a hotel attendant selecting/secure multiple rooms(with nos) for a Customer using combobox or listbox or something. How my interface will look like and techniques.
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Dec 26, 2012
My Application is C# winform
I am facing below error at the time of form close and end of Dispose() method .
The instruction at "0xXXXXXXXX" referenced memory at "0xXXXXXXXX", The memory could not be "written". Click on OK to terminate that program.
how to avoid / catch this error .
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Aug 7, 2013
How would I go about selecting a subitem in a listview control with just pure Win32 API? I know it's possible with MFC... but I can't use MFC for this project. Right now, when you click on a subitem , it selects only the first column of the row . I used the following by referring internet. But its not working.
HTML Code:
iSlected=SendMessage(hList,LVM_GETNEXTITEM,-1,LVNI_FOCUSED|LVNI_SELECTED);
ListView_SetItemState(hList,iSlected,LVIS_FOCUSED|LVIS_SELECTED,0x000F);
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Jul 15, 2013
I have N vectors which look like this:
[1→m] [m+1→2m] [2m+1→3m] [3m+1→4m] [4m+1→5m]..... [{(N-1)m}+1→Nm]
I want to select 1 element from each vector without duplication of any combinations. Essentially only when all combinations are done with 1st element in first vector ,only then it should move to next element in first vector.
Say i have elements :[123] [456] [789]
my combinations should be like
147
148
149
157
158
159
167
168
169
247....
Also, I cant have any repetitions and only after all combinations of 1 are done only then the loop has to move to next combination ie 247 combination and so on.
I tried NCK (n choose k) command but it gave me random combinations. How should i go about it with using minimal for loops?
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Apr 3, 2015
I am trying to get a datagrid working in my program with populating a simple set of data. Which i can then expand on and bring in data from a database.
But even this little simple test datagrid does not seems to be working.
XAML Code
<DataGrid Grid.Row="6" Grid.Column="0" Grid.ColumnSpan="2" Margin="10" Name="DataGrid_1" ItemsSource="{Binding DataGridData}"></DataGrid>
<Button Grid.Row="6" Grid.Column="2" Margin="10" FontSize="12" Command="{Binding Path=GetDataGridData_Command}">Get Data</Button>
[Code].....
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Apr 6, 2012
if (comboBox1.Enabled == true && textBox5.Text != "")
{
OleDbConnection con = new OleDbConnection();
con.ConnectionString = @"Provider=Microsoft.ACE.OLEDB.12.0;" + @"Data Source= c:usersmert" + @"documentsvisual studio 2010ProjectsPayrollCSWindowsFormsApplication7P ayrollDB.accdb";
[Code]....
this is my code. I am getting this error on "cmdole2" query.
error text is:
---------------------------
---------------------------
System.Data.OleDb.OleDbException (0x80040E14): Syntax error in INSERT INTO statement.
at System.Data.OleDb.OleDbCommand.ExecuteCommandTextE rrorHandling(OleDbHResult hr)
at System.Data.OleDb.OleDbCommand.ExecuteCommandTextF orSingleResult(tagDBPARAMS dbParams, Object& executeResult)
[Code]....
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Jul 18, 2014
Recently I tried a project template from infragistics
Infragistics Windows Forms -ProjectManager
every time I open the design form it desply this message.
What should I do to resolve it.
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Aug 23, 2012
I was wondering if there is a -> simple <- way to overwrite existing text in a masked texbox...
Example: I have a masked textbox, where you can insert dates. That means that you can enter only numbers for the day, month and year.
If I have to do it programmatically, there is no problem... I already have some ideas how I could do something like that, but I would like to know if VS has any parameter or any option I only have to activate.
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Nov 20, 2014
I want to print the current grid values while clicking the print option ..
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Dec 15, 2014
I'm trying to create custom WPF control, similar to DataGrid. DataGrid was great as a base class for a different custom control I needed, because I could do something like this:
<shared:MyDataGrid ItemsSource="{Binding Persons}" >
<DataGrid.Columns>
<DataGridTextColumn Binding="{Binding Name}" Width="4*" />
<DataGridTextColumn Binding="{Binding Phone}" Width="3*" />
<DataGridTextColumn Binding="{Binding Email}" Width="3*" />
</DataGrid.Columns>
</shared:MyDataGrid>
where Person class would be like this:
public class Person
{
public string Name {get; set;}
public string Phone {get; set;}
public string Email {get; set;}
}
... and I can reuse it elsewhere with collections of different type, binding its properties to columns of different width and style.
What I need now is something similar, but differs in a way, that DataGrid is no longer good fit for the base class.
What I'm interested in is: how does DataGrid "tell" the columns in Columns collection, to have the type of ItemsSource bound collection as a DataContext? How does the Name property of Person class become available to the column in DataGrid.Columns?
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Feb 9, 2014
I have been struggling to implement a method for reading data from SQL server to my C# program. In the C# program I prepared a DataGrid (not a DataGridView) for the data to be shown in it using a button "Load Table". Now I just want to read a table which has 4 different columns which I also added to the DataGrid.
I have a DataAccessDB class and this is the code for establishing a connection:
const string DB_CONNECTION = @"It is known to me";
SqlConnection con;
SqlCommand cmd;
Controller myController;
Then, there is a code to reference controller:
public DataAccessDB(Controller refController) {
con = new SqlConnection(DB_CONNECTION);
cmd = new SqlCommand();
cmd.Connection = con;
cmd.CommandType = CommandType.StoredProcedure;
myController = refController;
}
And this is the code for a List which I am going to use for filling the data to a DataGrid:
public List<ProductionStock> GetProductionStockFromDB() {
int productionStockId, amount;
decimal price;
string name, descript;
[code]....
And now the main part - how to read the data when I press a LoadTable button. The point here is that I already defined connection strings here as you can see, and in the method itself I guess I should not repeat it. The tutorials I have seen they do it everything in that one button.
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