CODEWITHSUNDEEP
c#winformscontrolsproperties
Vinod Maurya
Vinod Maurya

Reputation: 4177

Set objects properties from string in C#

Is there any way to set the properties of the objects from string. For example I have "FullRowSelect=true" and "HoverSelection=true" statements as string for ListView property.

How to assign these property along with their values without using if-else or switch-case statments? Is there any SetProperty(propertyName,Value) method or similar for this?

Upvotes: 1

Views: 3104

Answers (8)

jgauffin
jgauffin

Reputation: 101150

First variant is to use reflection:

    public class PropertyWrapper<T>
    {
        private Dictionary<string, MethodBase> _getters = new Dictionary<string, MethodBase>();

        public PropertyWrapper()
        {
            foreach (var item in typeof(T).GetProperties())
            {
                if (!item.CanRead)
                    continue;

                _getters.Add(item.Name, item.GetGetMethod());
            }
        }

        public string GetValue(T instance, string name)
        {
            MethodBase getter;
            if (_getters.TryGetValue(name, out getter))
                return getter.Invoke(instance, null).ToString();

            return string.Empty;
        }
    }

to get a property value:

var wrapper = new PropertyWrapper<MyObject>(); //keep it as a member variable in your form

var myObject = new MyObject{LastName = "Arne");
var value = wrapper.GetValue(myObject, "LastName");

You can also use Expression class to access properties.

Upvotes: 1

Grammarian
Grammarian

Reputation: 6882

Try this:

PropertyInfo pinfo = this.myListView.GetType().GetProperty("FullRowSelect");
if (pinfo != null)
    pinfo.SetValue(this.myListView, true, null);

Upvotes: 1

Botz3000
Botz3000

Reputation: 39620

You can use reflection to do this:

myObj.GetType().GetProperty("FullRowSelect").SetValue(myObj, true, null);

Upvotes: 2

Lazarus
Lazarus

Reputation: 43084

Try this:

private void setProperty(object containingObject, string propertyName, object newValue)
{
    containingObject.GetType().InvokeMember(propertyName, BindingFlags.SetProperty, null, containingObject, new object[] { newValue });
}

Upvotes: 3

Jon
Jon

Reputation: 437434

This can be accomplished with reflection, for example look at this question.

Upvotes: 0

Euphoric
Euphoric

Reputation: 12849

You can look at Reflection. Its possible to find property and set its value thanks to this. But you need to parse your string yourself. And it may be problem geting valid value of correct type from string.

Upvotes: 0

TToni
TToni

Reputation: 9391

There isn't such a method, but you could write one using reflection.

Upvotes: 0

Rob Stevenson-Leggett
Rob Stevenson-Leggett

Reputation: 35679

You can do this with reflection, have a look at the PropertyInfo class's SetValue method

 YourClass theObject = this;
 PropertyInfo piInstance = typeof(YourClass).GetProperty("PropertyName");
 piInstance.SetValue(theObject, "Value", null);

Upvotes: 1

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