下面是我比较两个数据表的代码。
<script runat="server">
protected void btnCompare_Click(object sender, EventArgs e)
{
System.Xml.Schema.XmlSchemaSet schemaSet = new System.Xml.Schema.XmlSchemaSet();
string fileName12 = System.IO.Path.GetFileName(fuXSD.PostedFile.FileName);
fuXSD.PostedFile.SaveAs(Server.MapPath("~/" + fileName12));
string fileBasePath = Server.MapPath("~/");
string fileName = System.IO.Path.GetFileName(this.fuXSD.FileName);
string fullFilePath = fileBasePath + fileName;
schemaSet.Add("http://www.w3.org/2001/XMLSchema", fullFilePath);
schemaSet.Compile();
System.Xml.Schema.XmlSchema xmlSchema = null;
foreach (System.Xml.Schema.XmlSchema schema in schemaSet.Schemas())
{
xmlSchema = schema;
}
System.Data.DataSet myDS = new System.Data.DataSet();
myDS.ReadXmlSchema(fuXSD.PostedFile.InputStream);
System.Data.DataTable dt1 = new System.Data.DataTable();
dt1.Columns.Add("TableName", Type.GetType("System.String"));
dt1.Columns.Add("ColumnName", Type.GetType("System.String"));
dt1.Columns.Add("Datatype", Type.GetType("System.String"));
dt1.Columns.Add("Length", Type.GetType("System.String"));
foreach (object item in xmlSchema.Items)
{
System.Xml.Schema.XmlSchemaElement schemaElement = item as System.Xml.Schema.XmlSchemaElement;
System.Xml.Schema.XmlSchemaComplexType complexType = item as System.Xml.Schema.XmlSchemaComplexType;
if (schemaElement != null)
{
System.Xml.Schema.XmlSchemaType schemaType = schemaElement.SchemaType;
System.Xml.Schema.XmlSchemaComplexType schemaComplexType = schemaType as System.Xml.Schema.XmlSchemaComplexType;
if (schemaComplexType != null)
{
System.Xml.Schema.XmlSchemaParticle particle = schemaComplexType.Particle;
System.Xml.Schema.XmlSchemaSequence sequence = particle as System.Xml.Schema.XmlSchemaSequence;
if (sequence != null)
{
foreach (System.Xml.Schema.XmlSchemaElement childElement in sequence.Items)
{
if (childElement != null)
{
System.Xml.Schema.XmlSchemaType schemaType2 = childElement.SchemaType;
System.Xml.Schema.XmlSchemaSimpleType schemaSimpleType = schemaType2 as System.Xml.Schema.XmlSchemaSimpleType;
System.Xml.Schema.XmlSchemaSimpleTypeRestriction restriction = schemaSimpleType.Content as System.Xml.Schema.XmlSchemaSimpleTypeRestriction;
if (restriction != null)
{
if (restriction.BaseTypeName.Name != null)
{
foreach (System.Xml.Schema.XmlSchemaObject facet in restriction.Facets)
{
string facetvalue = "";
if (restriction.BaseTypeName.Name.ToLower() == "datetime")
{
facetvalue = "";
}
else
{
facetvalue = ((System.Xml.Schema.XmlSchemaFacet)facet).Value;
}
if (facet is System.Xml.Schema.XmlSchemaMaxLengthFacet || facet is System.Xml.Schema.XmlSchemaMinInclusiveFacet)
{
dt1.Rows.Add(schemaElement.Name, childElement.Name, restriction.BaseTypeName.Name, facetvalue);
//Response.Write(dt);
//Response.Write(schemaElement.Name + " : " + childElement.Name + " : " + restriction.BaseTypeName.Name + " : " + facetvalue + "<br />");
}
}
}
}
}
}
}
}
}
}
System.Data.DataTable dt2 = new System.Data.DataTable();
dt2.Columns.Add("TableName", Type.GetType("System.String"));
dt2.Columns.Add("ColumnName", Type.GetType("System.String"));
dt2.Columns.Add("Datatype", Type.GetType("System.String"));
dt2.Columns.Add("Length", Type.GetType("System.String"));
var reader = new System.IO.StreamReader(fuCSV.PostedFile.InputStream);
reader.ReadLine();
while (reader.Peek() != -1)
{
var line = reader.ReadLine();
var values = line.Split(',');
dt2.Rows.Add(values[0], values[1], values[2], values[3]);
//Response.Write(dt);
//Response.Write(values[0] + " " + values[1] + " " + values[2] + " " + values[3] + "<br />");
}
////// Compare Both //////
dt1.TableName = "FirstTable";
dt2.TableName = "SecondTable";
//Create Empty Table
System.Data.DataTable table = new System.Data.DataTable("Difference");
try
{
//Must use a Dataset to make use of a DataRelation object
using (System.Data.DataSet ds = new System.Data.DataSet())
{
ds.Tables.AddRange(new System.Data.DataTable[] { dt1.Copy(), dt2.Copy() });
//Get Columns for DataRelation
System.Data.DataColumn[] firstcolumns = new System.Data.DataColumn[ds.Tables[0].Columns.Count];
for (int i = 0; i < firstcolumns.Length; i++)
{
firstcolumns[i] = ds.Tables[0].Columns[i];
}
System.Data.DataColumn[] secondcolumns = new System.Data.DataColumn[ds.Tables[1].Columns.Count];
for (int i = 0; i < secondcolumns.Length; i++)
{
secondcolumns[i] = ds.Tables[1].Columns[i];
}
//Create DataRelation
System.Data.DataRelation r = new System.Data.DataRelation(string.Empty, firstcolumns, secondcolumns, false);
ds.Relations.Add(r);
for (int i = 0; i < dt1.Columns.Count; i++)
{
table.Columns.Add(dt1.Columns[i].ColumnName, dt1.Columns[i].DataType);
}
table.Columns.Add("Message", typeof(string));
table.BeginLoadData();
foreach (System.Data.DataRow parentrow in ds.Tables[0].Rows)
{
System.Data.DataRow[] childrows = parentrow.GetChildRows(r);
if (childrows == null || childrows.Length == 0)
table.LoadDataRow(parentrow.ItemArray, true);
}
table.EndLoadData();
}
}
catch (Exception ex)
{
throw ex;
}
Response.Write(table);
GVDifference.DataSource = table;
GVDifference.DataBind();
}
</script>
<html>
<head runat="server">
<meta name="viewport" content="width=device-width" />
<title></title>
</head>
<body>
<form runat="server">
<div>
<asp:GridView ID="dataGridView1" runat="server"></asp:GridView>
<asp:FileUpload ID="fuXSD" runat="server" />
<br />
<asp:FileUpload ID="fuCSV" runat="server" />
<br />
<asp:Button ID="btnCompare" runat="server" OnClick="btnCompare_Click" Text="Compare" />
<asp:GridView ID="GVDifference" runat="server"></asp:GridView>
</div>
</form>
</body>
</html>
以下是我的第一个数据表结果：
TableName ColumnName Datatype Length
CDS_CLHC_TEMP1 CLCL_ID string 12
CDS_CLHC_TEMP CLHC_COND_CD1 string 2
CDS_CLHC_TEMP CLHC_COND_CD2 string 2
CDS_CLHC_TEMP CLHC_COND_CD3 string 2
给出另一个数据表结果：
TableName ColumnName Datatype Length
CDS_CLHC_TEMP CLCL_ID string 12
CDS_CLHC_TEMP CLHC_COND_CDPS string 2
CDS_CLHC_TEMP CLHC_COND_CD2 Varchar 2
CDS_CLHC_TEMP CLHC_COND_CD3 string 2
现在，当我比较两个数据表时，我得到了确切的更改结果，但如下所示：
TableName ColumnName Datatype Length Message
CDS_CLHC_TEMP1 CLCL_ID string 12
CDS_CLHC_TEMP CLHC_COND_CDPS string 2
CDS_CLHC_TEMP CLHC_COND_CD2 Varchar 2
在上表中，我想获取哪些表更改或列更改。这里的第一列CDS_CLHC_TEMP1已更改，因此它应显示表名更改。