Simple question.

舞灵精怪

Now I want to display five columns as follows:

Product Code Product Name Product Category Code Product Category Name Button Bar

 01 Apple A001 Fruit Selection ..
 02 Beef B001 Meat Selection:

As shown above, extract the product code and product name from the database, then click the select button in the fifth column,
A pop-up tree of product categories is displayed. Select the category to return and display the information in 3 or 4 columns. . .

How to achieve winform?

Help, give me some code, thank you. .

ak41sl

When loading, the first two columns of data are fetched from the database. Click combobox and display the results in three or four columns.

舞灵精怪

to:ak41sl

Can you be more specific? Thank you.
Anxious, winform is not very familiar, it was developed by webform before. .

逍遥恶魔

You can access each other by setting the public attribute of a commodity code in each of the two windows

maodanyun

a suggestion:
Columns 3 and 4 are empty first, and then click the select button, a window pops up to select the product category. After selection, click OK, the small window closes, and the results are displayed in columns 3 and 4. You want this result, I guess you The problem is not here, but how to return the result after selecting the category, right? If so, a workaround:
1. Define the event in the pop-up selection category window:
public delegate void SelectedEventHandle (string category, string category name);
public event SelectedEventHandle Selected;
Triggered at the "OK" button in this window:
Selected ("A001", "Fruit");
this.Close ();
In the window "Select" button shown earlier (assuming the category selection window class is FormSelect):
FormSelect fs = new FormSelect ();
fs.Selected + = new Form2.SelectedEventHandle (f_Selected);
fs.show ();
Note the method f_Selected:
void f_Selected (string category, string category name)
        {
            // throw new Exception ("The method or operation is not implemented.");
            // here you can display categories etc. into columns 3 and 4
        }

blackapple

Also I use datagrid, how to add button column in the fifth column?

maodanyun

Another solution:
Define the method in the category selection window:
string [] lbs = new string [2];
public string [] Selected ()
{
    this.ShowDialog ();
    return lbs;
}
After selecting the category, in the click event of the OK button in this window:
lbs [0] = "A001";
lbs [1] = "fruit";
this.close ();
In the display window:

FormSelect fs = new FormSelect ();
string [] lbs = fs.Selected ();
// Show the return value later

Combined with the previous solution, it is a more convenient solution

blackapple

to:maodanyun
Can you talk about how to set up the front window, for example, the button column, pass 3, 4 column id
Wait, thank you. .

maodanyun

You can add buttons using the Add method of the Controls of the controls, and the code is more troublesome.

maodanyun

Are you using datagrid or dataGridView? There should be a DataGridViewButtonColumn in the column type of dataGridView?