Dropdownlist Reset SelectedValue

Question

I have a DropDownList connected to an ObjectDataSource. In my page load i set the selectedvalue to a specific value depending on the case. How can I in my method selectedindexchanged "reset" the selectedvalue so you still can choose from the other options? Or should I not use selectedvalue to set the defaultvalue of the dropdownlist? ``` protected void Page_Load(object sender, EventArgs e) { int default = category.TypeId; DropDownList.SelectedIndex = default; } protected void DropDownList_SelectedIndexChanged(object sender, EventArgs e) { int id = int.Parse(DropDownList.SelectedValue); Session["id"] = id; } ```

Accepted Answer

You should only `DataBind` your `DropDownList` and set its default value `if(!IsPostBack)`:

```
protected void Page_Load(Object sender, EventArgs e)
{
    if(!IsPostBack)
    {
        int default = category.TypeId;
        DropDownList.SelectedValue = default.ToString();
    }
}
```

`Page.IsPostBack` Property

Dropdownlist Reset SelectedValue

Solution

Problem