IMPLICITLY CANNOT CONVERT cHAR TO BOOLEAN

Hi i've an issue

if (ds2.Tables[0].Rows.Count > 0)
                 {
                     int i = 0,j=0,k=0;
                     int count = 0;
                     char[] arr1=new char[ds2.Tables[0].Rows[0][0].ToString().ToCharArray().Length];
                     char[] result = new char[ds2.Tables[0].Rows[0][0].ToString().ToCharArray().Length]; 
                    while (i < ds2.Tables[0].Rows.Count)
                     {                         
                         arr1 = ds2.Tables[0].Rows[i]["PrivilegeID"].ToString().ToCharArray();
                        if(i==0)
                        {
                            result=ds2.Tables[0].Rows[i+1]["PrivilegeID"].ToString().ToCharArray();
                        }
                         count = arr1.Length;
                         for (j = 0; j < count; j++)
                         {
                             result[j]=Convert.ToChar((Convert.ToBoolean(arr1[j]))||(Convert.ToBoolean(result[j])));
                         }
                         i++;
                     }

Error Cannot implicitly convert char to bool

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