call string as Function

Question

1.00/5 (1 vote)

See more:

i want to hard code for states and cities..

i am having 50 functions as i am having 50 states, from which i am calling a function on combobox1_selectedindexchanged event.
.
for that i have create a switch case with 50 cases. where combobox1's selected index is passed as a case no.
now 10 functions are to be added, i think switch case is not being convenient for that,
.
so i have a idea, is it possible?

C#

functionName+combobox.selectedindex+();

so that my 60 cases will reduced to only one function ??
.
or there is any other option..

.

Posted 28-Sep-14 21:55pm

Madhuri Gamane

Updated 28-Sep-14 21:58pm

v2

Add a Solution

Comments

Jameel VM 29-Sep-14 4:01am

can you please post the function you have tried?

Gihan Liyanage 29-Sep-14 4:02am

I cant correctly understand what is the problem. But according to your details , I think you may want to find a one Item from list of strings. Is it ?

Richard MacCutchan 29-Sep-14 4:16am

No it is not possible. And using a switch statement with 50 cases in this way is totally the wrong way to go about things.

jaket-cp 29-Sep-14 4:29am

You may want to look at.
Passing Parameters (C# Programming Guide)
http://msdn.microsoft.com/en-us/library/0f66670z.aspx
So I believe in your example, you could call the function like this
functionName(combobox.selectedindex);
That is if I understand what you are trying to do.

[no name] 29-Sep-14 5:49am

you can achive this by Enums

Madhuri Gamane 29-Sep-14 5:59am

public void fun1()
{
ComboBox2.Items.Add("A");
ComboBox2.Items.Add("B");
ComboBox2.Items.Add("C");
ComboBox2.Items.Add("D");
}
public void fun2()
{
ComboBox2.Items.Add("E");
ComboBox2.Items.Add("f");
ComboBox2.Items.Add("g");
ComboBox2.Items.Add("h");
}
.
.
.
.
public void fun50()
{
ComboBox2.Items.Add("i");
ComboBox2.Items.Add("j");
ComboBox2.Items.Add("k");
ComboBox2.Items.Add("l");
}
private void comboBox1_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
int ch = 0;

switch (ch)
{
case 0:
fun1();
case 1:
fun2();
.
.
.
case 49:
fun50();
}

}

// Instead Of this can i write
private void comboBox1_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
int i= ComboBox2.SelectedIndex;
fun+ i +();
}
// Is it possible or any other so i can write only one function instead of 50 cases ?

BillWoodruff 29-Sep-14 6:40am

Are you familiar with the use of Delegates, 'Action, and 'Func in C# .NET ? CPallini has put you on the right track with the link in his solution. Feel free to ask for help if you need some additional explanation, or example. I strongly recommend using a Dictionary.

Madhuri Gamane 29-Sep-14 7:01am

thanx..

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

CPallini · Accepted Answer · 2014-09-28T23:45:00

Solution 1

You might use an array of delegates, see for instance, here: "Array of Function Pointers?"[^].

Posted 28-Sep-14 23:45pm

CPallini

Comments

BillWoodruff 29-Sep-14 6:40am

Let's see if the OP can understand the content in this link.