Topic: VB.NET ReportViewer Parameters problem

[Touti]

I know we have a few programmers here so I thought maybe one of you could help with this.

Dim P(1) As ReportParameter
P(0) = New ReportParameter("Customer", TextBox1.Text.Trim, True)
P(1) = New ReportParameter("Style", TextBox2.Text.Trim, True)
ReportViewer1.LocalReport.SetParameters(New ReportParameter() {P(0), P(1)})

I can't figure out why I'm getting

Unable to cast object of type 'Microsoft.Reporting.WebForms.ReportParameter[]' to type 'System.Collections.Generic.IEnumerable`1[Microsoft.Reporting.WinForms.ReportParameter]'

on execution of line 4.  I tried every variance of that code I could think of for building the parameters array but it just doesn't work.

[DJ Doena]

VB.NET long time no see.

you declare an array of ReportParameter with two values. And when you call SetParameters you create a new array just to copy both elements into it. Why?

But your problem is this:

Unable to cast object of type 'Microsoft.Reporting.WebForms.ReportParameter[]' to type 'System.Collections.Generic.IEnumerable`1[Microsoft.Reporting.WinForms.ReportParameter]'

Wrong class in the wrong namespace

After correcting this you should call

ReportViewer1.LocalReport.SetParameters(P)

[Touti]

VB.NET long time no see.

you declare an array of ReportParameter with two values. And when you call SetParameters you create a new array just to copy both elements into it. Why?

That's not how I had it in the first place, it just happenS to be the last example I tried from my research on msdn forums.

But your problem is this:

Unable to cast object of type 'Microsoft.Reporting.WebForms.ReportParameter[]' to type 'System.Collections.Generic.IEnumerable`1[Microsoft.Reporting.WinForms.ReportParameter]'

Wrong class in the wrong namespace

After correcting this you should call

ReportViewer1.LocalReport.SetParameters(P)

Yes I know, I found it before lunch but thanks anyway.