I'm looking to display a checkbox field within a gridview.
Currently, I am using the
Checked='<%# Convert.ToBoolean(Eval("Inactive")) %>'NULL value for the Inactive field. When the value is 0 or 1, it works as expected, but when it's NULL, it throws an exception.
Can someone please advise me on how to populate the checkbox so that it remains unchecked if the field is null? Thank you in advance!
One option is to address the exception directly, but a more immediate fix could involve changing the database column to require a default value of 0 when not filled. Alternatively, if you still need to permit null values, catching and handling the exception or marking a check box as needed may be necessary.
In any case, finding a permanent resolution for the issue with null values would likely be the most effective solution in the long run.
In the following lines of code, a check is performed to determine if the value is equal to NULL.
If the value is not equal to NULL, then the variable Checked will be assigned the value of Inactive
If the value is NULL, the variable Checked will be set to False.
Checked='<%# IIF(Not IsDBNull(Eval("Inactive")), Eval("Inactive"), False) %>'
My sentiments align with Frank Crook's...dealing with the absence of a value like this can be effective:
Checked='<%# Eval("Inactive") != DBNull.Value ? Convert.ToBoolean(Eval("Inactive")) : false %>'
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