Set Height of ListView at run time in android

How to set Height of ListView.

XML Code (This code is working fine and fixed height as 200 dip)

<LinearLayout
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:padding="5dip"
    android:orientation="vertical" >
    <ListView
        android:id="@+id/dialog_ListView"
        android:layout_width="wrap_content"
        android:layout_height="200dip"
        android:padding="5dip"
        android:layout_weight="1"
        android:dividerHeight="5dip"
        android:divider="@android:color/transparent" />        
</LinearLayout>

Android Code (This code not fixed width and height)

convertView = mInflater.inflate( R.layout.dialog_page, null );
convertView.setLayoutParams( new ListView.LayoutParams( 200, 300) );

Android Code (This code i got Error Message)

convertView = mInflater.inflate( R.layout.lock_file_page, parent );
convertView.setLayoutParams( new ListView.LayoutParams( 200, 300) );

Error Message

java.lang.UnsupportedOperationException: addView(View, LayoutParams) is not supported in AdapterView

How do fix Width and Height at Runtime.

Thanks in advance.