Add Data To A Control From One Class To Another

james.smith

This is the problem. I can add data to a combobox if it is in the same class. For example: String x = "Test"; combobox1.Item.Add(x); But if I have the data in another class I cannot add it. For example String x = "Test"; Form1 myForm = new Form1(); myForm.combobox1.Item.Add(x); But it does not work. Any ideas? I am new to C#, so sorry if this is simple. I don't get an error, but it doesn't load the data to the combo box. I can't seem to get data from one class into a control in another.

2 Replies

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spgilmore22y ago
As an alternative, I generally find it better practice to provide accessor methods for private class members than to make the members themselves public. Pseudocode: class Form1 { private ComboBox combobox1; public void addtocombobox(string atext) { combobox1.Items.Add(atext); } }
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ssswamii22y ago
Make the combobox as public. This will allow other classes to modify it. Or, make a public function that does the work. For example, class Form1 : Form { ComboBox myCombo; .... public void AddItemToCombo(string text) { this.myCombo.Items.Add(text); } ... // create an instance of another class, passing this instance to it MyClass tester = new MyClass(this); } // in another class class MyClass { private Form1 theFormInstance; public MyClass(Form1 formInstance) { this.theFormInstance = formInstance; } theFormInstance.AddItemToCombo("Test"); } Does that make sense?
+1