Nullable datetime column in .NET DataGrid with DateTimePicker

<?xml version="1.0" encoding="utf-8"?>
<xs:schema id="NullDataDataSet" targetNamespace="http://tempuri.org/NullDataDataSet.xsd" xmlns:mstns="http://tempuri.org/NullDataDataSet.xsd" xmlns="http://tempuri.org/NullDataDataSet.xsd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata" xmlns:msprop="urn:schemas-microsoft-com:xml-msprop" attributeFormDefault="qualified" elementFormDefault="qualified">
  <xs:annotation>
    <xs:appinfo source="urn:schemas-microsoft-com:xml-msdatasource">
      <DataSource DefaultConnectionIndex="0" FunctionsComponentName="QueriesTableAdapter" Modifier="AutoLayout, AnsiClass, Class, Public" SchemaSerializationMode="IncludeSchema" xmlns="urn:schemas-microsoft-com:xml-msdatasource">
        <Connections>
          <Connection AppSettingsObjectName="Settings" AppSettingsPropertyName="NullDataConnectionString" ConnectionStringObject="" IsAppSettingsProperty="true" Modifier="Assembly" Name="NullDataConnectionString (Settings)" ParameterPrefix="@" PropertyReference="ApplicationSettings.NullDate.Properties.Settings.GlobalReference.Default.NullDataConnectionString" Provider="System.Data.SqlClient" />
        </Connections>
        <Tables>
          <TableAdapter BaseClass="System.ComponentModel.Component" DataAccessorModifier="AutoLayout, AnsiClass, Class, Public" DataAccessorName="tbl_DemoTableAdapter" GeneratorDataComponentClassName="tbl_DemoTableAdapter" Name="tbl_Demo" UserDataComponentName="tbl_DemoTableAdapter">
            <MainSource>
              <DbSource ConnectionRef="NullDataConnectionString (Settings)" DbObjectName="dbo.tbl_Demo" DbObjectType="Table" FillMethodModifier="Public" FillMethodName="Fill" GenerateMethods="Both" GenerateShortCommands="true" GeneratorGetMethodName="GetData" GeneratorSourceName="Fill" GetMethodModifier="Public" GetMethodName="GetData" QueryType="Rowset" ScalarCallRetval="System.Object, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" UseOptimisticConcurrency="true" UserGetMethodName="GetData" UserSourceName="Fill">
                <DeleteCommand>
                  <DbCommand CommandType="Text" ModifiedByUser="false">
                    <CommandText>DELETE FROM [tbl_Demo] WHERE (([Id] = @Original_Id) AND ((@IsNull_Name = 1 AND [Name] IS NULL) OR ([Name] = @Original_Name)) AND ((@IsNull_Arrived = 1 AND [Arrived] IS NULL) OR ([Arrived] = @Original_Arrived)))</CommandText>
                    <Parameters>
                      <Parameter AllowDbNull="false" AutogeneratedName="" DataSourceName="" DbType="Int32" Direction="Input" ParameterName="@Original_Id" Precision="0" ProviderType="Int" Scale="0" Size="0" SourceColumn="Id" SourceColumnNullMapping="false" SourceVersion="Original" />
                      <Parameter AllowDbNull="true" AutogeneratedName="" DataSourceName="" DbType="Int32" Direction="Input" ParameterName="@IsNull_Name" Precision="0" ProviderType="Int" Scale="0" Size="0" SourceColumn="Name" SourceColumnNullMapping="true" SourceVersion="Original" />
                      <Parameter AllowDbNull="true" AutogeneratedName="" DataSourceName="" DbType="StringFixedLength" Direction="Input" ParameterName="@Original_Name" Precision="0" ProviderType="NChar" Scale="0" Size="0" SourceColumn="Name" SourceColumnNullMapping="false" SourceVersion="Original" />
                      <Parameter AllowDbNull="true" AutogeneratedName="" DataSourceName="" DbType="Int32" Direction="Input" ParameterName="@IsNull_Arrived" Precision="0" ProviderType="Int" Scale="0" Size="0" SourceColumn="Arrived" SourceColumnNullMapping="true" SourceVersion="Original" />
                      <Parameter AllowDbNull="true" AutogeneratedName="" DataSourceName="" DbType="DateTime" Direction="Input" ParameterName="@Original_Arrived" Precision="0" ProviderType="DateTime" Scale="0" Size="0" SourceColumn="Arrived" SourceColumnNullMapping="false" SourceVersion="Original" />
                    </Parameters>
                  </DbCommand>
                </DeleteCommand>
                <InsertCommand>
                  <DbCommand CommandType="Text" ModifiedByUser="false">
                    <CommandText>INSERT INTO [tbl_Demo] ([Name], [Arrived]) VALUES (@Name, @Arrived);
SELECT Id, Name, Arrived FROM tbl_Demo WHERE (Id = SCOPE_IDENTITY())</CommandText>
                    <Parameters>
                      <Parameter AllowDbNull="true" AutogeneratedName="" DataSourceName="" DbType="StringFixedLength" Direction="Input" ParameterName="@Name" Precision="0" ProviderType="NChar" Scale="0" Size="0" SourceColumn="Name" SourceColumnNullMapping="false" SourceVersion="Current" />
                      <Parameter AllowDbNull="true" AutogeneratedName="" DataSourceName="" DbType="DateTime" Direction="Input" ParameterName="@Arrived" Precision="0" ProviderType="DateTime" Scale="0" Size="0" SourceColumn="Arrived" SourceColumnNullMapping="false" SourceVersion="Current" />
                    </Parameters>
                  </DbCommand>
                </InsertCommand>
                <SelectCommand>
                  <DbCommand CommandType="Text" ModifiedByUser="true">
                    <CommandText>SELECT        Id, Name, Arrived
FROM            tbl_Demo</CommandText>
                    <Parameters />
                  </DbCommand>
                </SelectCommand>
                <UpdateCommand>
                  <DbCommand CommandType="Text" ModifiedByUser="false">
                    <CommandText>UPDATE [tbl_Demo] SET [Name] = @Name, [Arrived] = @Arrived WHERE (([Id] = @Original_Id) AND ((@IsNull_Name = 1 AND [Name] IS NULL) OR ([Name] = @Original_Name)) AND ((@IsNull_Arrived = 1 AND [Arrived] IS NULL) OR ([Arrived] = @Original_Arrived)));
SELECT Id, Name, Arrived FROM tbl_Demo WHERE (Id = @Id)</CommandText>
                    <Parameters>
                      <Parameter AllowDbNull="true" AutogeneratedName="" DataSourceName="" DbType="StringFixedLength" Direction="Input" ParameterName="@Name" Precision="0" ProviderType="NChar" Scale="0" Size="0" SourceColumn="Name" SourceColumnNullMapping="false" SourceVersion="Current" />
                      <Parameter AllowDbNull="true" AutogeneratedName="" DataSourceName="" DbType="DateTime" Direction="Input" ParameterName="@Arrived" Precision="0" ProviderType="DateTime" Scale="0" Size="0" SourceColumn="Arrived" SourceColumnNullMapping="false" SourceVersion="Current" />
                      <Parameter AllowDbNull="false" AutogeneratedName="" DataSourceName="" DbType="Int32" Direction="Input" ParameterName="@Original_Id" Precision="0" ProviderType="Int" Scale="0" Size="0" SourceColumn="Id" SourceColumnNullMapping="false" SourceVersion="Original" />
                      <Parameter AllowDbNull="true" AutogeneratedName="" DataSourceName="" DbType="Int32" Direction="Input" ParameterName="@IsNull_Name" Precision="0" ProviderType="Int" Scale="0" Size="0" SourceColumn="Name" SourceColumnNullMapping="true" SourceVersion="Original" />
                      <Parameter AllowDbNull="true" AutogeneratedName="" DataSourceName="" DbType="StringFixedLength" Direction="Input" ParameterName="@Original_Name" Precision="0" ProviderType="NChar" Scale="0" Size="0" SourceColumn="Name" SourceColumnNullMapping="false" SourceVersion="Original" />
                      <Parameter AllowDbNull="true" AutogeneratedName="" DataSourceName="" DbType="Int32" Direction="Input" ParameterName="@IsNull_Arrived" Precision="0" ProviderType="Int" Scale="0" Size="0" SourceColumn="Arrived" SourceColumnNullMapping="true" SourceVersion="Original" />
                      <Parameter AllowDbNull="true" AutogeneratedName="" DataSourceName="" DbType="DateTime" Direction="Input" ParameterName="@Original_Arrived" Precision="0" ProviderType="DateTime" Scale="0" Size="0" SourceColumn="Arrived" SourceColumnNullMapping="false" SourceVersion="Original" />
                      <Parameter AllowDbNull="false" AutogeneratedName="Id" ColumnName="Id" DataSourceName="[C:\NULLDATE\NULLDATE\NULLDATA.MDF].dbo.tbl_Demo" DataTypeServer="int" DbType="Int32" Direction="Input" ParameterName="@Id" Precision="0" ProviderType="Int" Scale="0" Size="4" SourceColumn="Id" SourceColumnNullMapping="false" SourceVersion="Current" />
                    </Parameters>
                  </DbCommand>
                </UpdateCommand>
              </DbSource>
            </MainSource>
            <Mappings>
              <Mapping SourceColumn="Id" DataSetColumn="Id" />
              <Mapping SourceColumn="Name" DataSetColumn="Name" />
              <Mapping SourceColumn="Arrived" DataSetColumn="Arrived" />
            </Mappings>
            <Sources />
          </TableAdapter>
        </Tables>
        <Sources />
      </DataSource>
    </xs:appinfo>
  </xs:annotation>
  <xs:element name="NullDataDataSet" msdata:IsDataSet="true" msdata:UseCurrentLocale="true" msprop:Generator_UserDSName="NullDataDataSet" msprop:Generator_DataSetName="NullDataDataSet" msprop:EnableTableAdapterManager="True">
    <xs:complexType>
      <xs:choice minOccurs="0" maxOccurs="unbounded">
        <xs:element name="tbl_Demo" msprop:Generator_UserTableName="tbl_Demo" msprop:Generator_RowDeletedName="tbl_DemoRowDeleted" msprop:Generator_RowChangedName="tbl_DemoRowChanged" msprop:Generator_RowClassName="tbl_DemoRow" msprop:Generator_RowChangingName="tbl_DemoRowChanging" msprop:Generator_RowEvArgName="tbl_DemoRowChangeEvent" msprop:Generator_RowEvHandlerName="tbl_DemoRowChangeEventHandler" msprop:Generator_TableClassName="tbl_DemoDataTable" msprop:Generator_TableVarName="tabletbl_Demo" msprop:Generator_RowDeletingName="tbl_DemoRowDeleting" msprop:Generator_TablePropName="tbl_Demo">
          <xs:complexType>
            <xs:sequence>
              <xs:element name="Id" msdata:ReadOnly="true" msdata:AutoIncrement="true" msdata:AutoIncrementSeed="-1" msdata:AutoIncrementStep="-1" msprop:Generator_UserColumnName="Id" msprop:Generator_ColumnPropNameInRow="Id" msprop:Generator_ColumnVarNameInTable="columnId" msprop:Generator_ColumnPropNameInTable="IdColumn" type="xs:int" />
              <xs:element name="Name" msprop:Generator_UserColumnName="Name" msprop:Generator_ColumnPropNameInRow="Name" msprop:Generator_ColumnVarNameInTable="columnName" msprop:Generator_ColumnPropNameInTable="NameColumn" minOccurs="0">
                <xs:simpleType>
                  <xs:restriction base="xs:string">
                    <xs:maxLength value="10" />
                  </xs:restriction>
                </xs:simpleType>
              </xs:element>
              <xs:element name="Arrived" msprop:Generator_UserColumnName="Arrived" msprop:Generator_ColumnPropNameInRow="Arrived" msprop:Generator_ColumnVarNameInTable="columnArrived" msprop:Generator_ColumnPropNameInTable="ArrivedColumn" type="xs:dateTime" minOccurs="0" />
            </xs:sequence>
          </xs:complexType>
        </xs:element>
      </xs:choice>
    </xs:complexType>
    <xs:unique name="Constraint1" msdata:PrimaryKey="true">
      <xs:selector xpath=".//mstns:tbl_Demo" />
      <xs:field xpath="mstns:Id" />
    </xs:unique>
  </xs:element>
</xs:schema>