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linqdatasource where bit field value = true

Posted on 2010-11-09
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Last Modified: 2012-05-10
Hi EE.

I have a dropdownlist bound to a linqdatasource.   The table it is bound to has a bit field.
I simply want to filter the linqdatasource by this field.
i.e. where bitfield = true

How do I do this?

Thanks
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Question by:Sheritlw
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4 Comments
 
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Expert Comment

by:ValleyENT
ID: 34099222
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Author Comment

by:Sheritlw
ID: 34099259
I love those articles and that is where I have got most of my information.
Problem is with the boolean value I get an error regarding the == not being int32.

I need to know how to filter by a boolean value.

Thanks


<asp:LinqDataSource ID="LnqLUServicesPrimary" runat="server" 
                                       ContextTypeName="SalonDataClassesDataContext" TableName="ServicesLUs" 
                                       Where="MultiServ == @MultiServ">
                                      <WhereParameters>
                                            <asp:Parameter Name="MultiServ" Type="Boolean" DefaultValue="true" />
                                       
                                      </WhereParameters>
                                  </asp:LinqDataSource>

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Accepted Solution

by:
Sheritlw earned 0 total points
ID: 34099349
I figured it out.
If values in the field are null then you will receive an exception similar to Operator '==' incompatible with operand types 'Boolean?' and 'Int32'.

Since I added the field when there was already data in the table, the field held null values.  Once I edited the table, I changed the aspx to the code below... and it works!


<asp:LinqDataSource ID="LnqLUServicesPrimary" runat="server" 
                                       ContextTypeName="SalonDataClassesDataContext" TableName="ServicesLUs" 
                                       Where="MultiServ == True">
                                      <WhereParameters>
                                            <asp:Parameter Name="MultiServ" Type="Boolean" DefaultValue="true" />
                                       
                                      </WhereParameters>
                                  </asp:LinqDataSource>

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Author Closing Comment

by:Sheritlw
ID: 34130324
Found answer
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