Question

How to select item FindByValue DropDownList in wizardstep

Exception:

NullReferenceException
Object reference not set to an instance of an object.

C#:

protected void Page_Load(object sender, EventArgs e)
{
    ...

    DropDownList DropDownList2 = 
       (DropDownList)Wizard1.WizardSteps[1].FindControl("DropDownList1");

    DropDownList2.Items.FindByValue(
        DataSetLoad.Tables[1].Rows[0]["a"].ToString()).Selected = true;

    ...
}

Answer 1

protected void Page_Load(object sender, EventArgs e)
{
…

DropDownList DropDownList2 = 
   (DropDownList)Wizard1.WizardSteps[1].FindControl("DropDownList1");
DropDownList2.DataBind();
DropDownList2.Items.FindByValue(
    DataSetLoad.Tables[1].Rows[0]["a"].ToString()).Selected = true;

...

}