Problem With ComboBox

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Hello There
I have a C# application which contain two forms. I want to fetch the value of ComboBox from another form and save it into a variable in different form.

For this, I changed Modifiers property of ComboBox to Public.
Create an object of the form

C#

Form1 frmParent = new Form1();

and assign the value of ComboBox into a string vaiable in child form

C#

string s = "";
s= frmParent.cmbTransType.Text;

After I debug the program, the value of string variable is not updated and it show blank.

Need Suggestion
Regards

Posted 1-Jun-13 21:19pm

Mayank Topiwala

Updated 1-Jun-13 21:25pm

v3

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OriginalGriff · Accepted Answer · 2013-06-01T22:05:00

Solution 2

Do not do it like that!
Firstly, it won't work, and secondly, even if it did, it's a poor practice!

I'm not sure of the relationship between your two forms exactly, but it is covered in one of these three short Tips:
Transferring information between two forms, Part 1: Parent to Child[^]
Transferring information between two forms, Part 2: Child to Parent[^]
Transferring information between two forms, Part 3: Child to Child[^]

Posted 1-Jun-13 22:05pm

OriginalGriff

Comments

Mayank Topiwala 2-Jun-13 4:31am

Thanks for the info OriginalGriff.
I have one more doubt. Suppose I want to check in a Parent form if the datagridview control of the child form has any records. So how to do this ?

OriginalGriff 2-Jun-13 5:02am

It's exactly the same as the Child to Parent, except without the Event - you just need a property in the Child which the Parent accesses. That way, the Parent needs to know nothing about how the child does it. Call it "UserCount" (or whatever your DGV contains) and let it fetch the number from the DGV (just give it a Getter, but no Setter)

Mayank Topiwala 2-Jun-13 5:09am

Confuse ! :(

OriginalGriff 2-Jun-13 5:29am

Which bit? :laugh:

Mayank Topiwala 2-Jun-13 5:43am

when i initialize the child form then all its controls are reset so i couldn't get the number of records of the DGV in parent form.

OriginalGriff 2-Jun-13 5:56am

So don't initialize the child form...use the existing one you are showing (or were showing).

Try to remember I can't see your screen or access your HDD, and have no idea what you code looks like, or where you are executing when you want to look at the child form...so you need to give me enough info to know what you are trying to do! :laugh: