Convert bool? to bool in View

Question

i have checkbox in my which is like this @Html.CheckBoxFor(model => model.SKUs.Jewish) but my Jewish in database is nullable type so it gives me an error cannot implicitly convert type 'bool?' to 'bool'. how do check my model that it has values then it should show that else not.please help.

@Html.CheckBoxFor(model => model.SKUs.Jewish.HasValue ? (bool)model.SKUs.Jewish : false) — Steve, Jun 11 '13 at 10:15
ITS GIVING ME AN ERROR :Templates can be used only with field access, property access, single-dimension array index, or single-parameter custom indexer expressions. — DharaPPatel, Jun 11 '13 at 10:24
http://stackoverflow.com/questions/6849774/mvc3-creating-checkbox-for-nullable-boolean — Raphaël Althaus, Jun 11 '13 at 13:41

hutchonoid · Answer 1 · 2014-01-27T09:13:34.590

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You could use the following:

@Html.CheckBox("SKUs.Jewish", Model.SKUs.Jewish.GetValueOrDefault());

If the value is not set it uses the nullable types default value which is false.

edited Jan 27 '14 at 09:13

answered Jun 11 '13 at 10:47

hutchonoid

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When post with that way sending null values? – Can Ürek Jan 27 '14 at 07:47
@CanÜrek Hi Can, I improved my answer above. I think that works better. – hutchonoid Jan 27 '14 at 09:14

score 0 · Answer 2 · answered Jun 11 '13 at 09:34

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With a nullable type you check if it has a value with thing.HasValue, and get at the actual value using thing.Value.

answered Jun 11 '13 at 09:34

Grant Thomas

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how do i check in @Html.CheckBoxFor(model => model.SKUs.Jewish) in this code ? – DharaPPatel Jun 11 '13 at 09:36

score 0 · Answer 3 · answered Jan 28 '14 at 07:22

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And finally i solve that problem. If you are using a checkbox; uncheck Allow Nulls option of your field in your DB. That's it!

answered Jan 28 '14 at 07:22

Can Ürek

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And what if the field needs to be null sometimes? – Ege Bayrak Feb 24 '17 at 06:47

Convert bool? to bool in View

3 Answers3