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C# Programming questions specific to the Microsoft C# language. See also the forum Beginning Visual C# to discuss that specific Wrox book and code.
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Old September 30th, 2004, 06:40 PM
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Default ListBox DataSource

I have this code joined to my button (maybe i need to remove the connection from the event and put above the event code .. let me know if that is misstake:
private void button1_Click(object sender, System.EventArgs e)
{
string source = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=c:\\Documents and Settings\\Jugoars\\My Documents\\Visual Studio Projects\\WindowsApplication3\\Fillmark.mdb";
string selection = "SELECT * FROM mytable WHERE naslov IS NOT NULL";
OleDbDataAdapter da = new OleDbDataAdapter(selection , source);
DataSet ds = new DataSet();
da.Fill(ds);
this.listBox1.DataSource = ds;
}

and somehow i succeed to make not crash my app at least but now instead records from my database i'm receiving next message within ListBox after i click the button:
System.Data.DataViewManagerListItemTypeDescriptor
i'm little confused here and hane no idea this message why is standing for ... lol
Nearly i forgot to point out that maybe i could mapPath to the DB location like we do it within VBScript manner in ASP/ASP.NET Data Source=" & Server.MapPath("Fillmark.mdb").... maybe there is some System atribute that could provide maping the path and ensure my DB's location ... thanks in advance

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Old October 2nd, 2004, 08:04 AM
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You need to tell the listbox what fields in your table to display.

this.listBox1.DisplayMember = "somefieldname";
this.listBox1.ValueMember = "somefieldname";

hope this helps.

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Old October 9th, 2004, 11:30 PM
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Also remove the connection to some other part of code like Form_Load or one time event.



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