Linq Data Range

Hi,

I need your help please!!!

 I want to say if the user enter in GroupTxt a range from 10 -30 the linq query will return the result within that range.


HTML Code

<select name="GroupListID" class="btn btn-default dropdown-toggle" id="GroupListID">
                            <option value="">Select an Option</option>
                                    <option value="3">Dx</option>
                                    <option value="5">Group ID</option>
                                    <option value="4">NPI</option>
                                    <option value="6">Plan Code</option>
                                    <option value="1">Px</option>
                        </select>


                         @Html.TextBoxFor(x => x.GroupTxt, new { @class = "form-control", @style = "width:100%" })

Database
Table: RuleDetail

if (model.SelectedGroupID != null && model.GroupTxt != null)
                     list = list.Where(x => model.GroupTxt.Any(m => Equals(x.ConditionAttributesAndValues, m)));
              
                      // here I want to say 
                      //  and 
                      // and if the user enter a range in the textbox then filter all that are within the range.

ConditionAttributesAndValues is varchar(1000)

the data inside the ConditionAttributesAndValue looks like this:

<br> IF Dx = aa (299.00,<br>299.01,<br>299.80,<br>299.81,<br>299.90,<br>299.91,<br>99999)  <br> AND Dx Between Range (10 - 30) <br>(aa22)<br>"aa55"<br>

so is there a way to search for Dx range and see if what the user enter in the textbox is within the range in the database field called ConditionAttributesAndValue?