c# string compare condition

How to use compare or greater than condition like below.

"100" >= "700" in linq.


Currently, it alerts codes error.

Thanks
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ITsolutionWizardAsked:
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AndyAinscowFreelance programmer / ConsultantCommented:
To modify your example slightly.  Do you want a string comparison ("100" is less than "70")  or an numerical comparison (100 is greater than 70) ?  Where do these strings (numbers) come from.
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Fernando SotoRetiredCommented:
Hi ITsolutionWizard;

You can't apply operators of type >=, >, <, <= because they are not defined for strings. What are you trying to achieve.
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ITsolutionWizardAuthor Commented:
AndyAinscow: It came from the database. The column type is varchar(4).
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AndyAinscowFreelance programmer / ConsultantCommented:
I did ask two questions.  The rather more important one is repeated now:
Do you want a string comparison ("100" is less than "70")  or an numerical comparison (100 is greater than 70) ?
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