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Tuesday, February 12, 2013

DropdownList: SelectedValue does nothing.

 I have a ComboBox set as a DropDownList, and the SelectedValue property, which ostensibly will find and select the selected value, does not.

cbSalesman.SelectedValue = salesman;  This is probably because you would need to give it not just a string to look for, but an actual object that is a member of the Items list.  That would require ugly gyrations along the lines of the following.
  1. get the string to look for
  2. get the index of that string in the dropdown (using Items.IndexOf)
  3. grab the item at that index
  4. feed it to the "SelectedValue" property.
Instead of all that, why not just do this.

cbSalesman.SelectedIndex = cbSalesman.Items.IndexOf(salesman);


Bryan Valencia is a contributing editor and founder of Visual Studio Journey.  He owns and operates Software Services, a web design and hosting company in Manteca, California.

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