protected void SubmitNumberChoice_Click(object sender, EventArgs e)
{
//this is the submit button
//to grab the contents of a control will DEPEND on the control access type
//for TextBox, label, Literal use. Text
//for list(RadioButton, DropdownList) you may use one of
// .SelectedValue (best), SelectedIndev(physical location), SelectItem.Text
//for Checkbox use Checked (boolean)
//for the most part, all data from a control returns as a string
//since the control (object) is on the "RIGHT" side of an assignment statement,
// the object property uses its GET
string submitchoice = NumberChoice.Text;
if (string.IsNullOrEmpty(submitchoice))
{
//"LEFT" side uses the property's SET
MessageLabel.Text = "You did not enter a value for your program choice";
//clean up selection
ChoiceList.ClearSelection();
//another way:
//Choice.SelectedIndex = -1; //-1 is a non existent index
CollectionChoiceList.SelectedIndex = 0; //has my prompt
AlterLabel.ForeColor = System.Drawing.Color.Black;
DisplayDataRO.Text = "";
}
else
{
//"RIGHT" side uses the property's GET
// you can set/get the radiobuttonlist choice by either using
// .SelectedValue or .SelectedIndex or .SelctedItem.Text
//it is BEST to use .SelectedValue for positioning
ChoiceList.SelectedValue = submitchoice;
//place a check mark in the check box, if the chosen course is a program
if (submitchoice.Equals("2") || submitchoice.Equals("4"))
{
ProgrammingCourseActive.Checked = true;
AlterLabel.ForeColor = System.Drawing.Color.BlueViolet;
}
else
{
ProgrammingCourseActive.Checked = false;
AlterLabel.ForeColor = System.Drawing.Color.Black;
}
//DDL can be positioned using:
// .SelectedValue or .SelectedIndex or .SelctedItem.Text
//it is BEST to use .SelectedValue for positioning
CollectionChoiceList.SelectedValue = submitchoice;
//demonstration of what is obtaine by the different .Selectedxxxxxx
DisplayDataRO.Text = CollectionChoiceList.SelectedItem.Text
+ " at index " + CollectionChoiceList.SelectedIndex
+ " having a value of " + CollectionChoiceList.SelectedValue;
}
}
protected void ResetFields()
{
NumberChoice.Text = "";
ChoiceList.ClearSelection();
//ChoiceList.SelectedIndex = -1; //index -1 will not be found, optionally way
CollectionChoiceList.ClearSelection();
ProgrammingCourseActive.Checked = false;
AlterLabel.ForeColor = System.Drawing.Color.Black;
}
protected void ResetFields()
{
DisplayDataRO.Text = "";
ProgrammingCourseActive.Checked = false;
ChoiceList.ClearSelection();
//ChoiceList.SelectedIndex = -1; //This is an optional way of deselecting
CollectionChoiceList.ClearSelection();
AlterLabel.ForeColor = System.Drawing.Color.Black;
}
protected void SubmitNumberChoice_Click(object sender, EventArgs e)
{
//to grab the contents of a control will DEPEND on the cntrol access type
// for TextBox, label, or literal use .text
// for List (RadiobuttonList, DropDownList) you may use one of:
// .SelectedValue(best), .SelectedIndex(phyical location), .SelectedItem.Text
// for CheckBox use .Checked (boolean)
//for the most part, all data from a control returns as a string
//since the control (object) is on the "right" side of an assignment (set;), statement, the object Property uses its (get;)
string submitchoice = NumberChoice.Text;
if (string.IsNullOrEmpty(submitchoice))
{
//"left" side uses the Property's SET
MessageLabel.Text = "You did not enter a value for your program choice";
ChoiceList.ClearSelection();
//ChoiceList.SelectedIndex = -1; //-1 is a non-existent index. similar, but not necessary
//CollectionChoiceList.ClearSelection();
CollectionChoiceList.SelectedIndex = 0; //0 has my prompt
AlterLabel.ForeColor = System.Drawing.Color.Black;
DisplayDataRO.Text = "";
}
else
{
// you can set/get the radiobuttonlist choice by either using
// .SelectedValue or .SelectedIndex or SelectedItem.Text
// it is BEST to use .SelectedValue for positioning (go an find the line with the proper value and display as desired)
// using .SelectedIndex requires you know the exact physical location
ChoiceList.SelectedValue = submitchoice;
if (submitchoice.Equals("2") || submitchoice.Equals("4"))
{
ProgrammingCourseActive.Checked = true;
AlterLabel.ForeColor = System.Drawing.Color.AliceBlue;
}
else
{
ProgrammingCourseActive.Checked = false;
AlterLabel.ForeColor = System.Drawing.Color.Black;
}
//DDL an be positioned using
// .SelectedValue or .SelectedIndex or SelectedItem.Text
// it is BEST to use .SelectedValue for positioning
CollectionChoiceList.SelectedValue = submitchoice;
//demonstration of what is obtained by the different by the .SelectedIndex or SelectedItem.Text
DisplayDataRO.Text = CollectionChoiceList.SelectedItem.Text
+ " at index " + CollectionChoiceList.SelectedIndex
+ " having a value of " + CollectionChoiceList.SelectedValue;
}
}
