c# - I Can not disable button due to error Cannot implicitly convert type string to bool -

i need disable search button after information displayed in grid view. when wrote "btnsearch.enabled="false";" in grid view button, cannot implicitly convert type 'string' 'bool' message raise may give me solution please ?

protected void gvemployeeleaves_selectedindexchanged(object sender, eventargs e)   {         btnsearch.enabled="false";   } 

problem : "false" not valid boolean value(it string)

so should change either string "false" false or convert string "false" boolean.

you can directly assign false enabled property without double quotes below:

btnsearch.enabled = false; 

or

you can convert string false boolean value using convert.toboolean() method , assign

try this:

btnsearch.enabled=convert.toboolean("false");