ImJustPondering
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Populating a listview on a Parent Form from a class file: Need Help! C#
Hi, I've searched everywhere for documentation but can't find a solution to my problem...
Lets say I have a listview on a Parent Form (frmMain.cs). I also have a file (clsSQL.cs) with methods to query a database. When frmMain.cs initializes, it calls a method in clsSQL.cs to query the database for a list of records. I want that list of records to directly be inserted into a listview box on frmMain.cs.
I have made the listview public and a when I try to add something to it from clsSQL.cs (frmMain.lvMsgList.Items.A
* An object reference is requred for the nonstatic field, method, or property.
Can anyone provide an example on how I would do this or point me in the write direction on trying to populate data on a Parent Form from a class file?
Thanks!
Lets say I have a listview on a Parent Form (frmMain.cs). I also have a file (clsSQL.cs) with methods to query a database. When frmMain.cs initializes, it calls a method in clsSQL.cs to query the database for a list of records. I want that list of records to directly be inserted into a listview box on frmMain.cs.
I have made the listview public and a when I try to add something to it from clsSQL.cs (frmMain.lvMsgList.Items.A
* An object reference is requred for the nonstatic field, method, or property.
Can anyone provide an example on how I would do this or point me in the write direction on trying to populate data on a Parent Form from a class file?
Thanks!
ASKER
Right, but I'm having a problem adding items to frmMain.cs from a method in clsSQL.cs. Any ideas?
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in my example lvMsgList has to be public field but better to declare public method in frmMain class like "AddItemsToMsg" and lvMsgList can be private in this case.
function will look:
public void AddItemToList(frmMain frmObj)
{
frmObj.AddItemsToMsg("test
}
and in frmMain class:
public void AddItemsToMsg(string str)
{
lvMsgList.Items.Add(str);
}
function will look:
public void AddItemToList(frmMain frmObj)
{
frmObj.AddItemsToMsg("test
}
and in frmMain class:
public void AddItemsToMsg(string str)
{
lvMsgList.Items.Add(str);
}
ASKER
Exactly the explaination I was looking for. Thanks!
So why you graded me "B" and not "A":-( ?
frmMain.cs contains definitions for frmMain class.
If you use your function within methods of frmMain you have to write just
// code
lvMsgList.Items.Add("test3
//or
this.lvMsgList.Items.Add("
// end of code
Error you get is understandable. When you try to run method as ClassName.SomeMethod() SomeMethod have to be defined as static ( that is you are not going to change object context by this method )