I have a comboBox that I created in XAML using using binding and I'm unable to get the selection. I've tried everything I could think of or find on, but no luck.
Here's the relevant XAML and C# code for the comboBox:
I have 2 datagridview in one windows form, When I click row from datagridview1, it shows in datagridview2 (Select *from....). Also I have combobox column in datagridview2. My question is, when I select items in combobox, and click to new row in datagridview 1, datagridview2 combobox's is getting empty. it is my code:
private void dataGridView1_CellDoubleClick_1(object sender, DataGridViewCellEventArgs e) { try { int id = Convert.ToInt32 (dataGridView1.Rows[dataGridView1.CurrentRow.Index].Cells["id"].Value);//3
I am writing code for a program that will take user input selection of columns and determine an array based on that.The number of columns will be user selected.The number of rows equals 3^(columns) <--exponent not XOR
- This is because each column has the possibility of having the numbers 0,1,or 2
For example, if the user were to select "4" columns, then the array would have 4 columns and 3^4=81 rows. Then I would like to populate this with all of the possible combinations of 0,1,2
I am having some trouble creating a listbox in visual studio. I declared an array, set initial values, and now I would like to be able to update those values. It is a pizza inventory app, so I need to update the initial values once the user has added inventory. This is the code I have for the "Update Inventory" button:
// read in value and convert to double double dblInput = Convert.ToDouble(txtInput.Text); // loop through ingredients and add inventory to selected ingredient for (int i = 0; i < dblInventory.Length; i++) { // is item at i checked for update? if(lstInventory.GetItemCheckState(i) == CheckState.Checked)
I'm trying to make a selection process using roulette wheel selection. To do this I created two matrix, one random probabilities and one increasing probabilities. The idea is to choose a number according to the random probabilities. Here is the code I've written.
#include <iostream> #include <conio.h> #include <cstdlib> using namespace std; int main (){ float select [5], prob [10], mat [5]; int c, r, z; cout.precision (2); cout << "Random Number:" << endl;
[Code]...
The result I got is as follows:
Random Number:
0.0013 0.56 0.19 0.81 0.59
Increasing Probabilities:
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
Selected Column: 0 5 6 8 9
The evaluation doesnt seem to start from c=0 again. The selected column should be 0, 5, 1, 8, 5.
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.
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:
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?
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.
the code works and produce a table and fills the grid, what im trying to do is get this information into a DataGrid, so i can get rows selected by user. ive tried many ways ie convert the list into a datatable and display but produces errors, ive done the following,
ive added the HTML code to set up the datagrid, which i can see via design tab, but filling it up is harder.
i uderstand it needs a
protected System.Data.SqlClient.SqlDataAdapter sqlDataAdapter1; sqlDataAdapter1.Fill();// where it require a dataset or datatable DataGridProduct.DataBind();
as it requires a datatable i converted the list to a datatable when i run it it says null, im not sure where im going wrong, i noe the list works as i tried populating on a table.
public static DataTable ToDataTable<T>(List<T> items) { }
when i compile the following program i get a compiler warning, but i don't understand why. for me the code seems to be all right and does legitimate this warning. so here is the code
I have a datagrid, which has a column called Status. In the database, the field is a text field that can have the values up, down, or danger.
I needed to display the status as a "light" as per client request, so I have a StatusToImageConverter class that receives the status, and returns the proper image to display in the datagrid column. Works fine.
Now the issue I am having... I have a combo box above the datagrid for the user to filter the results if desired. The filtering works fine, but the newly displayed devices do not have their status light. In the Status column, nothing appears after the user filters. I think it may have to do with the fact that I am not re-initializing the datagrid, but just refreshing it? That's just my educated guess.
XAML: In the UserControl Resources:
<local:StatusToImageConverter x:Key="ImageConverter" /> In the DataGrid Control: <DataGridTemplateColumn Header="Status" IsReadOnly="True"> <DataGridTemplateColumn.CellTemplate>
I want to be able to keep on adding a row to my datagrid every time i click a button, the row will hold the text of the text box and the combobox in its individual cells, is there a way to do this without inserting a ridiculous amount of code?
I have made a datagrid in a WPF and added a button to add rows, here is the code for that:
this.itemListDataGrid.Items.Add(new TextBox());
Also, I have already got 3 colums in the datagrid pre-added by me, so when the rows are added I click on one to edit it and it comes up with error edit item not allowed.
For now I've done a function that creates menus and prints them, and a function that creates the character as an object.
Now I want to be able to show the stats of the player on the main menu, the problem is that I don't know how to make a copy of the map as it's private...
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.