How do I remove index out of bounds array exception

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index out of range exception:index is out of the bounds of array

C#

string s;
       string t;
       string[] a= new string[6];

       protected void Page_Load(object sender, EventArgs e)
       {
           DataTable dt = new DataTable();
           dt.Columns.AddRange(new DataColumn[7]{ new DataColumn("product_name"),new DataColumn("product_desc"),
               new DataColumn("product_price"),new DataColumn("product_qty"),
               new DataColumn("product_image"),new DataColumn("id"),new DataColumn("product_id") });
           if (Request.Cookies["aa"] != null)
           {
               s = Convert.ToString(Request.Cookies["aa"].Value);
               string[] strArr = s.Split('|');

               for (int i = 0; i < strArr.Length; i++)
               {
                   t = Convert.ToString(strArr[i].ToString());
                   string[] strArr1 = t.Split(',');

                   for (int j = 0; j < strArr1.Length; j++)
                   {
                       a[j] = strArr1[j].ToString();
                   }//getting here index out of bounds Exception kindly help me



                   dt.Rows.Add(a[0].ToString(), a[1].ToString(), a[2].ToString(),
                  a[3].ToString(), a[4].ToString(), i.ToString(),a[5].ToString() );//i because e want cookie index

               }

           }


           d1.DataSource = dt;
           d1.DataBind();

       }

What I have tried:

index out of range exception:index is out of the bounds of array

<pre lang="c#">

 string s;
        string t;
        string[] a= new string[6];
    
        protected void Page_Load(object sender, EventArgs e)
        {  
            DataTable dt = new DataTable();
            dt.Columns.AddRange(new DataColumn[7]{ new DataColumn("product_name"),new DataColumn("product_desc"),
                new DataColumn("product_price"),new DataColumn("product_qty"),
                new DataColumn("product_image"),new DataColumn("id"),new DataColumn("product_id") });
            if (Request.Cookies["aa"] != null)
            {
                s = Convert.ToString(Request.Cookies["aa"].Value);
                string[] strArr = s.Split('|');
    
                for (int i = 0; i < strArr.Length; i++)
                {
                    t = Convert.ToString(strArr[i].ToString());
                    string[] strArr1 = t.Split(',');
    
                    for (int j = 0; j < strArr1.Length; j++)
                    {
                        a[j] = strArr1[j].ToString();
                    }//getting here index out of bounds
    
            
    
                    dt.Rows.Add(a[0].ToString(), a[1].ToString(), a[2].ToString(),
                   a[3].ToString(), a[4].ToString(), i.ToString(),a[5].ToString() );//i because e want cookie index
    
                }
    
            }
            
    
            d1.DataSource = dt;
            d1.DataBind();
    
        }

Posted 26-Dec-17 17:46pm

Member 13595278

Updated 26-Dec-17 22:59pm

v2

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Rajesh Ku Swain · Answer 1 · 2017-12-26T18:49:00

Hi,

The error "Index Out of Bound Array Exception" comes when there are no data for that index.
Suppose the array length is 4, then it will start looping from 0 to 4. It means it will loop 5 times.

a[j] = strArr1[j].ToString();

if there are no data at strArr1[j].ToString(), then you will get this error.
Debug & Check what data is coming at strArr1[J].ToString() before getting exception.

If you you have any doubt, please let me know.

Regards,
Rajesh

Karthik_Mahalingam · Answer 2 · 2017-12-26T22:59:00

Solution 2

Validate the index of before accessing it from the collection

for (int j = 0; j < strArr1.Length; j++)
            {
                  if(a.Length >j) // add this line to validate
                    a[j] = strArr1[j].ToString();
            }

Posted 26-Dec-17 22:59pm

Karthik_Mahalingam