CODEWITHSUNDEEP
c#asp.net
Newbie
Newbie

Reputation: 49

Unable to catch the Dropdown selected value in a textbox inside a repeater

I have a DropDownList inside a repeater and whenever the selected text is changed, I have to show it in a TextBox but I'm getting Object reference not set to an instance of an object error

protected void Ddl_SelectedIndexChanged(object sender, EventArgs e)
{
    DropDownList ddl   = (DropDownList)  sender;
    RepeaterItem item  = (RepeaterItem)  ddl .NamingContainer;
    TextBox txt        = (TextBox) item.FindControl("TextBox4");
    txt.Text           = ddl.SelectedItem.Text;
}

Upvotes: 0

Views: 239

Answers (1)

RVD
RVD

Reputation: 123

Just enable Ddl dropdowns autopost back property to true and just add following line of code:

protected virtual void RepeaterItemCreated(object sender, RepeaterItemEventArgs e)
{
    DropDownList MyList = (DropDownList)e.Item.FindControl("ddl");
    MyList.SelectedIndexChanged += ddl_SelectedIndexChanged;
}

protected void Ddl_SelectedIndexChanged(object sender, EventArgs e)
 {
     RepeaterItem item  = (RepeaterItem)  Page.FindControl("repeatorid");
     TextBox txt        = (TextBox) item.FindControl("TextBox4");
     txt.Text           = ddl.SelectedItem.Text;     
 }

Upvotes: 1

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