CODEWITHSUNDEEP
c#visual-studio-2008listitemdropdownbox
Csharp
Csharp

Reputation: 2982

Adding ListItems causes an error "Cannot have multiple items selected in a DropDownList"

I am getting an error message "Cannot have multiple items selected in a DropDownList." After searching SO and google, I have narrowed the error cause to the ddlVendor.Items.Add(li) code block : 

ListItem li = new ListItem();
string[] TransDetail = Trans[0].Split(',');

li.Text = TransDetail[0].ToString() + ", " + TransDetail[1].ToString();

//TransDetail[2] = VendorId;
//TransDetail[3] = TransId;
li.Value = TransDetail[2].ToString() + ", " + TransDetail[3].ToString();
//ddlVendor.Items.Add(li);

I have tried ClearSelection() and .SelectedItem but no luck.

Any ideas why the code block above would be causing an error?

Update: When I comment ddlVendor.Items.Add(li); the page loads fine.
Is there another way to add an item to a dropdownlist box? I am using VS 2008.

Upvotes: 2

Views: 268

Answers (1)

Csharp
Csharp

Reputation: 2982

The issue was resolved by changing the code to add items to the dropdown list (Add value manually into DropDownList, CheckBoxList and RadioButtonList.): 

YourDropDownList.Items.Add(new ListItem("JAKARTA", "JKT"));

Upvotes: 1

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