//updating the datasource in accordance to the users selection from the
//dropdown list
protected void ddl_SelectedIndexChanged(object sender, EventArgs e)
{
if (dataSource != null)
{
PropertyInfo property = dataSource.GetType().GetProperty(column.Text);
string selectedValue = ((DropDownList)sender).SelectedValue;
object oValue = NullFinder.Parse(selectedValue, property.PropertyType);
property.SetValue(dataSource, oValue, null);
}
}
//when the value of the field is changed (by the user), and is valid
//the handler updates the associated property of the datasource.
protected void txt_TextChanged(object sender, EventArgs e)
{
PropertyInfo property = dataSource.GetType().GetProperty(column.Text);
TextBox txt = (TextBox)sender;
try
{
object oValue;
if (txt.Text.Trim() == string.Empty)
{
oValue = NullFinder.GetNullValue(column.DataType);
}
else
{
oValue = NullFinder.Parse(txt.Text, property.PropertyType);
}
property.SetValue(dataSource, oValue, null);
}
catch (Exception)
{
txt_DataBinding(txt, null);
}
}