Index was outside the bounds of the array

Question

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C#

SqlParameter[] parameters = new SqlParameter[1];
           parameters[1] = DataLayer.DataAccess.AddParameter("@CategoryID", CategoryID, System.Data.SqlDbType.Int, 20);
           DataTable dt = DataLayer.DataAccess.ExecuteDTByProcedure("SP_GetAllProducts", parameters);
           return dt;

What I have tried:

I got a now another error index was outside the bounds of the array, please any one give me ideas. How to solve this error.

Posted 15-Feb-16 5:24am

Boopalslm

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Michael_Davies · Answer 1 · 2016-02-15T05:30:00

Solution 1

The array is 0 based not 1, the first element is 0.

C#

SqlParameter[] parameters = new SqlParameter[1];
           parameters[0] = DataLayer.DataAccess.AddParameter("@CategoryID", CategoryID, System.Data.SqlDbType.Int, 20);
           DataTable dt = DataLayer.DataAccess.ExecuteDTByProcedure("SP_GetAllProducts", parameters);
           return dt;

Why have an array when there is only 1?

Posted 15-Feb-16 5:30am

Michael_Davies

Updated 15-Feb-16 5:31am

v2

Comments

Boopalslm 16-Feb-16 2:05am

pnlProducts.Visible = true;
int CategoryID = Convert.ToInt16((((LinkButton)sender).CommandArgument));
GetProducts(CategoryID);

k working but now above line are error, Input string was not in a correct format, how to solve this problem.

Michael_Davies 16-Feb-16 2:12am

Use the debugger and look at the content of CommandArgument Convert.ToInt16 expects only numerals.

Boopalslm 16-Feb-16 2:22am

if you possible please modify my above code and send me.

Michael_Davies 16-Feb-16 2:25am

There is no modification to your code, check the actual contents of CommandArgument using the debugger.

Boopalslm 16-Feb-16 2:27am

k i will check once

Boopalslm 16-Feb-16 10:17am

Sir it's working fine and good thanks for your idea's, Thanks a lot.

Sascha Lefèvre · Answer 2 · 2016-02-15T05:30:00

Solution 2

Arrays are 0-based in C#. So if you allocate an array with a length of 1, your first (and only) valid index is 0:

C#

SqlParameter[] parameters = new SqlParameter[1];
parameters[0] = ...

Posted 15-Feb-16 5:30am

Sascha Lefèvre

F-ES Sitecore · Answer 3 · 2016-02-15T05:31:00

Solution 3

C#

parameters[0] = DataLayer.DataAccess.AddParameter("@CategoryID", CategoryID, System.Data.SqlDbType.Int, 20);

Posted 15-Feb-16 5:31am

F-ES Sitecore

Patrice T · Answer 4 · 2016-02-15T05:49:00

Solution 4

C# language is 0 based.
It simply mean that every array start at index 0.
An array of size 1 can only use index 0.
Array of size 1 have no interest, it just complicate the syntax.

Posted 15-Feb-16 5:49am

Patrice T