System.Linq.Dynamic to invoke action

Asked Feb 21 '18 at 21:12

Active Feb 22 '18 at 11:14

Viewed 90 times

I am using System.Linq.Dynamic to invoke actions dynamically , Attached below my code.

 void InvokeAction(object gv, string lambda) {
 var e = myalias.DynamicExpression.ParseLambda(gv.GetType(), null, lambda);
 e.Compile().DynamicInvoke(gv);
}

var gv = new GridView();
gv.DataSource = (new int[] {
 1,
 2,
 3,
 4,
 5
}).Select(p => new {
 f1 = "f1", f2 = "f2", f3 = "f3"
});
gv.DataBind();
InvokeAction(gv, "HeaderRow.Cells[0].Text = \"a\"");
// Runs fine , but does not update the value
InvokeAction(gv, "HeaderStyle.BackColor = System.Drawing.Color.White");
// Gives exception No property or field 'System' exists in type 'GridView'

First call to InvokeAction runs fine , but does not update the value . Second call to InvokeAction throws exception

No property or field 'System' exists in type 'GridView'

edited Feb 22 '18 at 11:14

4b0

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asked Feb 21 '18 at 21:12

Satya Sahoo

1

What does not work? What happens? – Camilo Terevinto Feb 21 '18 at 21:24
I have updated the details with what does not work and exception that I get – Satya Sahoo Feb 21 '18 at 21:55
You may find [this answer](https://stackoverflow.com/a/16681838/622391) of use - it talks about how to _"make the parser realize that [System.Drawing.Color] is an [enum] and not a property on [GridView]"_ – Simon MᶜKenzie Feb 22 '18 at 00:46
1

Why are you using Linq.Dynamic? – kͩeͣmͮpͥ ͩ Feb 22 '18 at 11:20

System.Linq.Dynamic to invoke action

0 Answers0