Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people, just like you, are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
Solved

Dynamically Create SqlParameters collection

Posted on 2004-10-19
3
705 Views
Last Modified: 2010-05-18
Hi,

I am attempting to update my database through a stored procedure.  The stored procedure has several parameters.  I am populating the SqlParamters array using the following:

SqlParameter[] parameters =
      {
            data.MakeInParam("@usrid", SqlDbType.VarChar, 55, logonid),
            data.MakeInParam("@title", SqlDbType.VarChar, 50, curVals[0].ToString()),
            data.MakeInParam("@bspy", SqlDbType.Int, 4, curVals[1].ToString()),
            data.MakeInParam("@ecbpy", SqlDbType.VarChar, 1, curVals[2].ToString()),
            data.MakeInParam("@cbpy", SqlDbType.Int, 4, curVals[3].ToString()),
            data.MakeInParam("@bs", SqlDbType.Int, 4, curVals[4].ToString()),
            data.MakeInParam("@ecb", SqlDbType.VarChar, 1, curVals[5].ToString()),
            data.MakeInParam("@eb", SqlDbType.Int, 4, curVals[6].ToString()),
            data.MakeInParam("@perg", SqlDbType.Decimal, 4, curVals[7].ToString()),
            data.MakeInParam("@msev", SqlDbType.Int, 4, curVals[8].ToString()),
      };

My issue is, that when any of my text boxes which contain Integer values are left blank (so the Integer should be Null in the database) I receive an error message.

I updated my stored procedure to set the integers to null as follows:

CREATE PROCEDURE [dbo].[sp_insert_cash_component] @usrid varchar(50), @title varchar(50), @bspy int = Null, @ecbpy varchar(1), @cbpy int = Null, @bs int = Null, @ecb varchar(1), @eb int = Null , @perg decimal(18,4) = Null, @msev int = Null AS

I would now like to dynamically create the above Parameter Array depending on the value in my textbox.  For example, if curVals[1].ToString() is "", then do not add @bspy to the parameter array.

Is there a way to dynamically declare the SqlParameter array (without providing a size) and then adding parameters to it as necessary?

Thanks,

Dave
0
Comment
Question by:a222493
  • 2
3 Comments
 
LVL 48

Expert Comment

by:Mikal613
ID: 12350515
drop it and recreate it
0
 
LVL 48

Expert Comment

by:Mikal613
ID: 12350526
0
 
LVL 3

Accepted Solution

by:
skpatra earned 250 total points
ID: 12355680
If you want to get this done without too many changes, do this:

ArrayList colList = new ArrayList(); //namespace to include is System.Collection

//now add any number of params based on any condition
if(curVals[0].ToString() != "")  
    ArrayList.Add(data.MakeInParam("@title", SqlDbType.VarChar, 50, curVals[0].ToString()));
  .
  .
  .
//now extract an array from the arraylist
SqlParameter[] parameters = (SqlParameter[])(colList.ToArray(typeof(SqlParameter)));
0

Featured Post

Master Your Team's Linux and Cloud Stack!

The average business loses $13.5M per year to ineffective training (per 1,000 employees). Keep ahead of the competition and combine in-person quality with online cost and flexibility by training with Linux Academy.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Summary Displaying images in RichTextBox is a common requirement with limited solutions available. Pasting through clipboard or embedding into RTF content only support static images.  This article describes how to insert Windows control objects int…
Welcome my friends to the second instalment and follow-up to our Minify and Concatenate Your Scripts and Stylesheets (http://www.experts-exchange.com/Programming/Languages/.NET/ASP.NET/A_4334-Minify-and-Concatenate-Your-Scripts-and-Stylesheets.html)…
Email security requires an ever evolving service that stays up to date with counter-evolving threats. The Email Laundry perform Research and Development to ensure their email security service evolves faster than cyber criminals. We apply our Threat…
Although Jacob Bernoulli (1654-1705) has been credited as the creator of "Binomial Distribution Table", Gottfried Leibniz (1646-1716) did his dissertation on the subject in 1666; Leibniz you may recall is the co-inventor of "Calculus" and beat Isaac…

856 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question