CODEWITHSUNDEEP
c#
Mahmoud K
Mahmoud K

Reputation: 85

Dynamic Control names in C#

I'm trying the following code:

for (int i = 0; i < students.Length; i++)
{
    "student" + i.ToString().Text = students[i];
}

I already have many labels which each one has name like: student1 student2 student3 . .

But I got this error: Error 1 'string' does not contain a definition for 'Text' and no extension method 'Text' accepting a first argument of type 'string' could be found (are you missing a using directive or an assembly reference?) F:\Homework\Homework\Form1.cs 161 46 Homework

Any help please??!

Upvotes: 2

Views: 6155

Answers (4)

Hossein Narimani Rad
Hossein Narimani Rad

Reputation: 32511

this may help

Controls.Find(string.Format("student{0}", i));

A better solution:

Set the Tag property of you Labels as follow:

Student1.Tag = 1;
Student2.Tag = 2;
Student3.Tag = 3;

I assume that your Labels are in a container control named container. use this code:

foreach(var item in container.Children) //based on your container type this line may change
{
    if(item is Label)
    {
        Label temp = ((Label)item);
        temp.Text = students[int.Parse(temp.Tag.ToString())]
    }
}

Upvotes: 3

dutzu
dutzu

Reputation: 3920

By doing i.ToString() you are given a string, which does not have the property Text :). That is what is causing your exception.

If Students is a list of controls that have the property .Text then use that and remove the ToString() else, remove the .Text.

Upvotes: 0

Alex Ovechkin
Alex Ovechkin

Reputation: 820

Use Controls.Find("student" + i.ToString())

Upvotes: 3

Oded
Oded

Reputation: 499392

You can't have dynamic variable names, in just about any language.

Looks like you are looking to have a collection or array of controls.

Something like:

var studentControls = new List<Control>();
studentControls.Add(student1); 
studentControls.Add(student2);
...
for (int i = 0; i < students.Length; i++)
{
    studentControls[i].Text = students[i];
}

Upvotes: 8

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