My XML file is As Below:
<?xml
version="1.0"
encoding="UTF-8"
standalone="no"?>
<Fields>
  <Field
ID="1"
Datatype="Option"
Enabled="1"
FieldClass="Normal"
Name="Document 
Type" CaptionML="ENU=Document 
Type" 
OptionString="Quote,Order,Invoice,Credit 
Memo,Blanket Order,Return Order" 
OptionCaptionML="ENU=Quote,Order,Invoice,Credit 
Memo,Blanket Order,Return Order" 
BlankNumbers="DontBlank"
BlankZero="0"
SignDisplacement="0"
Editable="1"
NotBlank="0"
Numeric="0"
DateFormula="0"
ClosingDates="0"
Title="0"
ValidateTableRelation="1"
TestTableRelation="1"
ExtendedDatatype="None"/>
  <Field
ID="2"
Datatype="Code"
DataLength="20"
Enabled="1"
FieldClass="Normal"
Name="Sell-to 
Customer No." 
CaptionML="ENU=Sell-to 
Customer No." 
BlankNumbers="DontBlank"
BlankZero="0"
SignDisplacement="0"
Editable="0"
NotBlank="0"
Numeric="0"
DateFormula="0"
ClosingDates="0"
Title="0"
ValidateTableRelation="1"
TestTableRelation="1"
ExtendedDatatype="None">
    <TableRelations
TableID="18"
TableName="Customer"
FieldID="0"/>
  </Field>
  <Field
ID="3"
Datatype="Code"
DataLength="20"
Enabled="1"
FieldClass="Normal"
Name="Document 
No." CaptionML="ENU=Document 
No." BlankNumbers="DontBlank"
BlankZero="0"
SignDisplacement="0"
Editable="1"
NotBlank="0"
Numeric="0"
DateFormula="0"
ClosingDates="0"
Title="0"
ValidateTableRelation="1"
TestTableRelation="1"
ExtendedDatatype="None">
    <TableRelations
TableID="36"
TableName="Sales 
Header" FieldID="3">
      <Filters
FilterGroup="0"
FieldID="1"
FilterType="FIELD"
FilterValue="1"/>
    </TableRelations>
  </Field>
  <Field
ID="4"
Datatype="Integer"
Enabled="1"
FieldClass="Normal"
Name="Line 
No." CaptionML="ENU=Line 
No." BlankNumbers="DontBlank"
BlankZero="0"
SignDisplacement="0"
Editable="1"
NotBlank="0"
Numeric="0"
DateFormula="0"
ClosingDates="0"
Title="0"
ValidateTableRelation="1"
TestTableRelation="1"
ExtendedDatatype="None"/>
  <Field
ID="5"
Datatype="Option"
Enabled="1"
FieldClass="Normal"
Name="Type"
CaptionML="ENU=Type"
OptionString=" 
,G/L Account,Item,Resource,Fixed Asset,Charge (Item)"
OptionCaptionML="ENU=" 
,G/L Account,Item,Resource,Fixed Asset,Charge (Item)""
BlankNumbers="DontBlank"
BlankZero="0"
SignDisplacement="0"
Editable="1"
NotBlank="0"
Numeric="0"
DateFormula="0"
ClosingDates="0"
Title="0"
ValidateTableRelation="1"
TestTableRelation="1"
OnValidate="134"
ExtendedDatatype="None"/>
  <Field
ID="6"
Datatype="Code"
DataLength="20"
Enabled="1"
FieldClass="Normal"
Name="No."
CaptionML="ENU=No."
BlankNumbers="DontBlank"
BlankZero="0"
SignDisplacement="0"
Editable="1"
NotBlank="0"
Numeric="0"
DateFormula="0"
ClosingDates="0"
Title="0"
ValidateTableRelation="1"
TestTableRelation="1"
OnValidate="135"
ExtendedDatatype="None">
    <TableRelations
TableID="7"
TableName="Standard 
Text" FieldID="0">
      <Conditions
FieldID="5"
ConditionType="CONST"
ConditionValue="0"/>
    </TableRelations>
    <TableRelations
TableID="15"
TableName="G/L 
Account" FieldID="0">
      <Conditions
FieldID="5"
ConditionType="CONST"
ConditionValue="1"/>
    </TableRelations>
    <TableRelations
TableID="27"
TableName="Item"
FieldID="0">
      <Conditions
FieldID="5"
ConditionType="CONST"
ConditionValue="2"/>
    </TableRelations>
    <TableRelations
TableID="156"
TableName="Resource"
FieldID="0">
      <Conditions
FieldID="5"
ConditionType="CONST"
ConditionValue="3"/>
    </TableRelations>
    <TableRelations
TableID="5600"
TableName="Fixed 
Asset" FieldID="0">
      <Conditions
FieldID="5"
ConditionType="CONST"
ConditionValue="4"/>
    </TableRelations>
    <TableRelations
TableID="5800"
TableName="Item 
Charge" FieldID="0">
      <Conditions
FieldID="5"
ConditionType="CONST"
ConditionValue="5"/>
    </TableRelations>
  </Field>
  <Field
ID="5800"
Datatype="Boolean"
Enabled="1"
FieldClass="Normal"
Name="Allow 
Item Charge Assignment" 
CaptionML="ENU=Allow 
Item Charge Assignment" 
BlankNumbers="DontBlank"
BlankZero="0"
SignDisplacement="0"
Editable="1"
InitValue="1"
NotBlank="0"
Numeric="0"
DateFormula="0"
ClosingDates="0"
Title="0"
ValidateTableRelation="1"
TestTableRelation="1"
OnValidate="206"
ExtendedDatatype="None"/>
  <Field
ID="5801"
Datatype="Decimal"
Enabled="1"
FieldClass="FlowField"
Name="Qty. 
to Assign" 
CaptionML="ENU=Qty. 
to Assign" 
BlankNumbers="DontBlank"
BlankZero="0"
SignDisplacement="0"
Editable="0"
NotBlank="0"
Numeric="0"
DateFormula="0"
ClosingDates="0"
Title="0"
ValidateTableRelation="1"
TestTableRelation="1"
ExtendedDatatype="None">
    <CalculationFormula
FlowType="Sum"
ReverseSign="0"
Table="5809"
Field="8">
      <TableFilters>
        <Filter
FilterGroup="0"
FieldID="1"
FilterType="FIELD"
ValueIsFilter="0"
OnlyMaxLimit="0"
FilterValue="1"/>
        <Filter
FilterGroup="0"
FieldID="2"
FilterType="FIELD"
ValueIsFilter="0"
OnlyMaxLimit="0"
FilterValue="3"/>
        <Filter
FilterGroup="0"
FieldID="3"
FilterType="FIELD"
ValueIsFilter="0"
OnlyMaxLimit="0"
FilterValue="4"/>
      </TableFilters>
    </CalculationFormula>
  </Field>
  <Field
ID="5802"
Datatype="Decimal"
Enabled="1"
FieldClass="FlowField"
Name="Qty. 
Assigned" 
CaptionML="ENU=Qty. 
Assigned" 
BlankNumbers="DontBlank"
BlankZero="0"
SignDisplacement="0"
Editable="0"
NotBlank="0"
Numeric="0"
DateFormula="0"
ClosingDates="0"
Title="0"
ValidateTableRelation="1"
TestTableRelation="1"
ExtendedDatatype="None">
    <CalculationFormula
FlowType="Sum"
ReverseSign="0"
Table="5809"
Field="9">
      <TableFilters>
        <Filter
FilterGroup="0"
FieldID="1"
FilterType="FIELD"
ValueIsFilter="0"
OnlyMaxLimit="0"
FilterValue="1"/>
        <Filter
FilterGroup="0"
FieldID="2"
FilterType="FIELD"
ValueIsFilter="0"
OnlyMaxLimit="0"
FilterValue="3"/>
        <Filter
FilterGroup="0"
FieldID="3"
FilterType="FIELD"
ValueIsFilter="0"
OnlyMaxLimit="0"
FilterValue="4"/>
      </TableFilters>
    </CalculationFormula>
  </Field>
</Fields>
 
 Searching 
Code
 ///
<summary>
       
///
       
/// 
</summary>
        ///
<param name="XMLPath">File 
Path</param>
       
/// 
<param name="SearchNode">Search 
Node</param>
       
/// 
<param name="AttributeName">Attribute 
Node</param>
       
/// 
<param name="AttributeValue">Attribute 
Value</param>
       
/// 
<param name="Connectionstring">Database 
ConnectionString</param>
       
private void 
InsertintoTableRelationInfo(string XMLPath,
string SearchNode, 
string AttributeName, string 
AttributeValue, string Connectionstring)
        {
            
#region Table 
RelationInfo
            XmlDocument 
doc = new 
XmlDocument();
            doc.Load(XMLPath);
 
            System.Text.StringBuilder 
str = new 
StringBuilder();
 
           
XmlNodeList nodes = 
doc.GetElementsByTagName(SearchNode);
 
           
foreach (XmlNode 
node in nodes)
            {
 
               
if (node.HasChildNodes)
                {
                   
foreach (XmlAttribute 
attribute in node.Attributes)
                    {
                       
if (attribute.Name == AttributeName)
                        {
                           
if (attribute.Value == AttributeValue)
                            {
 
                                for (int 
i = 0; i < node.ChildNodes.Count; i++)
                                {
                                    string name 
= node.ChildNodes[i].Name;
                                    
/*
                                     * Check ChildNode
                                     */
                                    if (name ==
"TableRelations")
                       
             {
                                        foreach 
(XmlAttribute chieldAttribute
in node.ChildNodes[i].Attributes)
                                        {
                                            
/*
                                             * Check ChildNode Attribute
                                             */
                                            if (chieldAttribute.Name 
== "TableID")
                                            {
                                                _TableRelationsTableID =
Convert.ToInt32(chieldAttribute.Value);
 
                                            }
                                            if (chieldAttribute.Name 
== "TableName")
                                            {
           
                                     _TableName = chieldAttribute.Value;
                                            }
                                            if (chieldAttribute.Name 
== "FieldID")
                                            {
        
                                        _TableFieldID =
Convert.ToInt32(chieldAttribute.Value);
                                            
}                                            
                                        }
                            
            _CalculationFormulaFlowType = 
"TableRelation";
                                        using (dbNavXmlDataContext 
db = new 
dbNavXmlDataContext(Connectionstring))
                                        {
                                        
    db.USP_INSERT_TableRelationInfo(_ObjectType, _ObjectID, _ID,
Convert.ToInt32(AttributeValue), 
_TableRelationsTableID, _TableName, _TableFieldID, _CalculationFormulaFlowType, 
_ReverseSign);
                                        }
                     
               }
                                    if (name ==
"CalculationFormula")
                                    {
                                        foreach 
(XmlAttribute chieldAttribute
in node.ChildNodes[i].Attributes)
                   
                     {
                                            if (chieldAttribute.Name 
== "FlowType")
                                            {
                                                _CalculationFormulaFlowType = 
chieldAttribute.Value;
 
                                            }
                                            if (chieldAttribute.Name 
== "ReverseSign")
                                            {
                                                _ReverseSign =
Convert.ToInt32(chieldAttribute.Value);
                                            }
                                           
                                        }
                                         
                                        using (dbNavXmlDataContext 
db = new 
dbNavXmlDataContext(Connectionstring))
                                        {
                                            
db.USP_INSERT_TableRelationInfo(_ObjectType, _ObjectID, _ID,
Convert.ToInt32(AttributeValue), _TableRelationsTableID, 
_TableName, _TableFieldID, _CalculationFormulaFlowType, _ReverseSign);
                                        }
                                    }
                                }
                            }
                       
}
                    }
                 }
 
            #endregion
            }
 
        }