how to use IndexOf method in C#

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hello....

I was translating VB code to C# .... And I am unable to get the solution of this IndexOf method .... please help me out....

C# code is...
show_classroom_link = (Convert.ToInt32(emp_rs["classroom_program_count"]) > 0) || (emp_rs["security_group_list"].IndexOf(",14,") + 1 > 0);

VB Code is...
show_classroom_link = (emp_rs.Item("classroom_program_count") > 0) or (InStr( emp_rs.Item("security_group_list"), ",14,") > 0)

Error: The object does not contain the definition for 'IndexOf'...</pre>

Posted 14-Jun-15 19:20pm

Ranju_test

Updated 14-Jun-15 20:07pm

v2

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Ralf Meier 15-Jun-15 1:56am

I can't see the usage of the .IndexOf inside your posted VB-Code ...
Plaese complete it.
Or ... use it in C# in the same way as it was used in VB ...

3 solutions

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Abhinav S · Answer 1 · 2015-06-14T20:59:00

Solution 1

Change

(emp_rs["security_group_list"].IndexOf(",14,")

to

(Convert.ToString(emp_rs["security_group_list"]).IndexOf(",14,")

Posted 14-Jun-15 20:59pm

Abhinav S

jdeep84 · Answer 2 · 2015-06-14T23:54:00

Solution 2

I think if emp_rs.Item("security_group_list") is a string field. if it is may be just check

emp_rs.Item("security_group_list").Contains(",14,")

Just a wild guess.

Posted 14-Jun-15 23:54pm

jdeep84

Comments

sasanka sekhar panda 15-Jun-15 6:06am

Contains().returns a bool value ..so how to compare bool>0 or not

jdeep84 16-Jun-15 2:57am

thats what if indexof returns greater than 0 it means provided string occurs/present in source string. I think the end result is bool which decides to show the link or not. Hope this make sense.

sasanka sekhar panda 16-Jun-15 5:09am

correct...

sasanka sekhar panda · Answer 3 · 2015-06-15T00:12:00

Solution 3

C#

//corrected code
show_classroom_link = (Convert.ToInt32(emp_rs["classroom_program_count"]) > 0) || (emp_rs["security_group_list"].ToString().IndexOf(",14,") > 0);

Posted 15-Jun-15 0:12am

sasanka sekhar panda