Databinding not working...?

[mikker_123]

The thing I want to do is simple: bind Control to String... so I must be missing something obvious... here's code: [code] string stringDataSource = "Hello"; private void Form1_Load(object sender, EventArgs e) { textBox1.DataBindings.Add("Text", stringDataSource, null); } private void btnWork_Click(object sender, EventArgs e) { MessageBox.Show(stringDataSource); } [/code] Tnx

[Josh Smith]

Since strings are immutable in .NET, this shouldn't work. A string is never changed. When a string reference points to a new value, it is literally pointing to a new string in the string pool (i.e. it points to a different memory address). Plus, databinding requires that you bind to a property, not to a value directly. Expose your string as a property on another object and then bind to that object & property. Josh

[mikker_123]

First of all, tnx a lot Josh... I surely better understand whole thing now. On another matter -> is it possible to bind to a member of Collection? If I'm having this situation: public class ModificatorData { private List address; public List Address { get { return address; } set { address = value; } } } Is it possible that I say -> textBox1 bind to first member of Address collection... textBox2 to second member... and so on? I guess answer is no because it's what DataGrids and DataSets do and you can't easily expose every member as Property, but I'm still courious... Again -> tnx for your help

[Josh Smith]

Technically, you could have each textbox bind to a different element in a collection, but that isn't the intended use of simple databinding. Simple databinding (binding a control property to a data source property) is meant to allow multiple controls on a Form to display the various values found in one object (i.e. one Address object in a collection). The "current" object being bound to in a collection is scoped to a BindingContext. Each control using the same binding context (which is the default set up) will display a value from the current item. If you really want each textbox to display a value from a different address, you'd need to establish the binding for each control in a separate binding context. Then move the currency manager's current object in each binding context to set the "current" object for that control. Sound like fun? :wtf: Josh

[mikker_123]

DataSet + DataGrid is much easier ;) Tnx a lot for your help.