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ActiveReports with paramerters in C#

Posted on 2010-09-08
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Last Modified: 2013-12-17
I placed SQL code in a datasource  field of my report and
put the following code in ReportStart event

Parameter myParam1 = new Parameter();
myParam1.Key = user_id;
myParam1.Type = Parameter.DataType.String;
myParam1.PromptUser = false;
this.Parameters.Add(myParam1);

But datasource does not receive parameter at all.
Could anybody tell what should I do?
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Question by:ybt
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7 Comments
 
LVL 53

Expert Comment

by:Huseyin KAHRAMAN
ID: 33627704
are you setting the value? also how do you use this parameter? in a select query?
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Author Comment

by:ybt
ID: 33627797
Yes, value set, I checked that and select query look like this:
SELECT  *    from memo m
 where m.memo_userid = <% myParam1|enter user id|'ALL'%>
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LVL 53

Expert Comment

by:Huseyin KAHRAMAN
ID: 33629262
but where do you set the value of this parameter?
i see you create a parameter, set its properties (but not the value, so value should be null by default) and query uses ALL because you never provided a value for your parameter
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LVL 53

Expert Comment

by:Huseyin KAHRAMAN
ID: 33629275
here is a sample i found on net

you are missing

myParam1.DefaultValue = "This is myParam1 default value"

http://www.datadynamics.com/Help/ActiveReports6/arHOWAddParameters.html
Dim myParam1 As New Parameter()
myParam1.Key = "myParam1"
myParam1.Type = Parameter.DataType.String
myParam1.PromptUser = True 'set to False if you do not want input from user
myParam1.Prompt = "Enter last name:"
myParam1.DefaultValue = "This is myParam1 default value"
Me.Parameters.Add(myParam1)

Open in new window

0
 

Author Comment

by:ybt
ID: 33629690
I did not type it here, I checked with a messagebox, value is not null

Parameter myParam1 = new Parameter();
myParam1.Key = user_id;
myParam1.Value = s_user;
myParam1.Type = Parameter.DataType.String;
myParam1.PromptUser = false;
this.Parameters.Add(myParam1);
I saw that sample it is for VB lower there for C#
0
 
LVL 53

Expert Comment

by:Huseyin KAHRAMAN
ID: 33629860
so you added this code to

Double-click in the gray area below the report to create an event-handling method for the ReportStart event.
Add code to the handler to change the data source at run time.

if you add this into ReportStart, then it should be fine...
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Accepted Solution

by:
ybt earned 0 total points
ID: 33809065
Still not work, but I solved problem by creating a strored procedure in SQL Server with parameters and in ReportStart event created a datasource in code.
DataDynamics.ActiveReports.DataSources.SqlDBDataSource _ds = new DataDynamics.ActiveReports.DataSources.SqlDBDataSource();
_ds.ConnectionString = .connection string;..
_ds.SQL = "exec my stored procedure  " + my parameter + "";
this.DataSource = _ds;
It works.

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