Perform the Same action multiple times with different parameters

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Sometimes we might want to perform the same action multiple times with different parameters. The following is a basic example of how to do this in LoadRunner.
In this example we have three different Parameters {Param_1}, {Param_2} and {Param_3} as shown.




The following script will perform three searches on google.co.in using above three different parameters.

Action()
{
            int i;
            char temp[10];

            // Progress Through 3 Parameters stored in {Param_1}, {Param_2} and {Param_3}

            for(i=1;i<4;i++)
{

            //stores the output like {Param_1} to variable temp
                        sprintf(temp,"{Param_%d}",i );
//To print the value of temp
lr_message("print %s",temp );

//Evaluate the temp and store the value in Param_value
                        lr_save_string(lr_eval_string(temp), "Param_value");

                        lr_start_transaction("Search");

//To print the value in Param_value               
                        lr_output_message("Parameter is %s", lr_eval_string("{Param_value}"));

                        // To find the value in Number of Results
                        web_reg_save_param("Number_of_Results", "LB=About ", "RB= results", LAST);

                        // Validate Content
                        web_reg_find("Text=<title>{Param_value} - Google Search</title>", LAST);

                        web_url("search",
                        "URL=http://www.google.co.in/search?hl=en&q={Param_value}",
                        "Resource=0",
                        "RecContentType=text/html",
                        "Referer=http://www.google.co.in/",
                        "Snapshot=t20.inf",
                        "Mode=HTML",
                        LAST);

                        lr_output_message("Results is %s", lr_eval_string("{Number_of_Results}"));

                        lr_end_transaction("Search", LR_AUTO);
            }
            return 0;
}


Output:

Virtual User Script started at : 2013-03-22 13:21:22
Starting action vuser_init.
Web Turbo Replay of LoadRunner 11.0.0 for WINXP; build 8859 (Aug 18 2010 20:14:31)          [MsgId: MMSG-27143]
Run Mode: HTML      [MsgId: MMSG-26000]
Run-Time Settings file: "XXXX\noname1\\default.cfg"        [MsgId: MMSG-27141]
Ending action vuser_init.
Running Vuser...
Starting iteration 1.
Starting action Action.
print {Param_1}
Action.c(20): Notify: Transaction "Search" started.
Action.c(23): Parameter is India
Action.c(26): Registering web_reg_save_param was successful        [MsgId: MMSG-26390]
Action.c(29): Registering web_reg_find was successful        [MsgId: MMSG-26390]
Action.c(31): Redirecting "http://www.google.co.in/search?hl=en&q=India" (redirection depth is 0)         [MsgId: MMSG-26694]
Action.c(31): To location "http://www.google.co.in/search?hl=en&q=India&safe=active"              [MsgId: MMSG-26693]
Action.c(31): Found resource "http://news.google.co.in/news/tbn/D0A9oUzHSLEJ/6.jpg" in HTML "http://www.google.co.in/search?hl=en&q=India&safe=active"       [MsgId: MMSG-26659]
Action.c(31): Found resource "http://www.google.co.in/maps/vt/data=Ay5GWBeob_WIPLDYoIWcfVXxvZu9XwJ55OX7Ag,9VaQjlC087k_75mFRH9mowSvvHJB_dkxhpdX6M2vqKE81Kf7OTZ0ZwAZ4lr7FRR8LKCgWhktbnWGJcnf5_doEDTc_-md8XA" in HTML "http://www.google.co.in/search?hl=en&q=India&safe=active"           [MsgId: MMSG-26659]
Action.c(31): Registered web_reg_find successful for "Text=<title>India - Google Search</title>" (count=1)              [MsgId: MMSG-26364]
Action.c(31): web_url("search") was successful, 69715 body bytes, 1850 header bytes       [MsgId: MMSG-26386]
Action.c(40): Results is 553,000,000
Action.c(42): Notify: Transaction "Search" ended with "Pass" status (Duration: 3.0071 Wasted Time: 0.9922).
print {Param_2}
Action.c(20): Notify: Transaction "Search" started.
Action.c(23): Parameter is Day
Action.c(26): Registering web_reg_save_param was successful        [MsgId: MMSG-26390]
Action.c(29): Registering web_reg_find was successful        [MsgId: MMSG-26390]
Action.c(31): Redirecting "http://www.google.co.in/search?hl=en&q=Day" (redirection depth is 0)           [MsgId: MMSG-26694]
Action.c(31): To location "http://www.google.co.in/search?hl=en&q=Day&safe=active"    [MsgId: MMSG-26693]
Action.c(31): Registered web_reg_find successful for "Text=<title>Day - Google Search</title>" (count=1)              [MsgId: MMSG-26364]
Action.c(31): web_url("search") was successful, 54179 body bytes, 702 header bytes         [MsgId: MMSG-26386]
Action.c(40): Results is 2,020,000,000
Action.c(42): Notify: Transaction "Search" ended with "Pass" status (Duration: 1.3367 Wasted Time: 0.0303).
And so on…

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