private void InitializeComponents()
{
this.components = new System.ComponentModel.Container();
if ((this.adventureWorksLTDataSet == null))
{
// Instantiate the object if not yet loaded from the data cache.
this.adventureWorksLTDataSet = new AdventureWorksDataSet.AdventureWorksLTDataSet();
}
this.productBindingSource = new System.Windows.Forms.BindingSource(this.components);
((System.ComponentModel.ISupportInitialize)(this.adventureWorksLTDataSet)).BeginInit();
((System.ComponentModel.ISupportInitialize)(this.productListObject)).BeginInit();
((System.ComponentModel.ISupportInitialize)(this.productBindingSource)).BeginInit();
((System.ComponentModel.ISupportInitialize)(this)).BeginInit();
//
// adventureWorksLTDataSet
//
this.adventureWorksLTDataSet.DataSetName = "AdventureWorksLTDataSet";
this.adventureWorksLTDataSet.SchemaSerializationMode = System.Data.SchemaSerializationMode.IncludeSchema;
//
// productBindingSource
//
this.productBindingSource.DataMember = "Product";
this.productBindingSource.DataSource = this.adventureWorksLTDataSet;
//
// Sheet1
//
((System.ComponentModel.ISupportInitialize)(this.adventureWorksLTDataSet)).EndInit();
((System.ComponentModel.ISupportInitialize)(this.productListObject)).EndInit();
((System.ComponentModel.ISupportInitialize)(this.productBindingSource)).EndInit();
((System.ComponentModel.ISupportInitialize)(this)).EndInit();
}
static private void InitializeCachedDataSet()
{
//<Snippet2>
//<Snippet3>
AdventureWorksDataSet.AdventureWorksLTDataSet productDataSet =
new AdventureWorksDataSet.AdventureWorksLTDataSet();
AdventureWorksDataSet.AdventureWorksLTDataSetTableAdapters.ProductTableAdapter productTableAdapter =
new AdventureWorksDataSet.AdventureWorksLTDataSetTableAdapters.ProductTableAdapter();
string workbookPath = System.Environment.GetFolderPath(
Environment.SpecialFolder.MyDocuments) +
@"\AdventureWorksReport\bin\Debug\AdventureWorksReport.xlsx";
ServerDocument serverDocument1 = null;
//</Snippet3>
//<Snippet4>
try
{
productTableAdapter.Fill(productDataSet.Product);
Console.WriteLine("The local dataset is filled.");
serverDocument1 = new ServerDocument(workbookPath);
CachedDataHostItem dataHostItem1 =
serverDocument1.CachedData.HostItems["AdventureWorksReport.Sheet1"];
CachedDataItem dataItem1 = dataHostItem1.CachedData["adventureWorksLTDataSet"];
// Initialize the worksheet dataset with the local dataset.
if (dataItem1 != null)
{
dataItem1.SerializeDataInstance(productDataSet);
serverDocument1.Save();
Console.WriteLine("The data is saved to the data cache.");
Console.ReadLine();
}
else
{
Console.WriteLine("The data object is not found in the data cache.");
}
}
catch (System.Data.SqlClient.SqlException ex)
{
Console.WriteLine(ex.Message);
}
catch (System.IO.FileNotFoundException)
{
Console.WriteLine("The specified workbook does not exist.");
}
finally
{
if (serverDocument1 != null)
{
serverDocument1.Close();
}
Console.WriteLine("\n\nPress Enter to close the application.");
Console.ReadLine();
}
//</Snippet4>
//</Snippet2>
}
static private void ReadCachedDataSet()
{
//<Snippet9>
//<Snippet10>
AdventureWorksDataSet.AdventureWorksLTDataSet productDataSet =
new AdventureWorksDataSet.AdventureWorksLTDataSet();
string workbookPath = System.Environment.GetFolderPath(
Environment.SpecialFolder.MyDocuments) +
@"\AdventureWorksReport\bin\Debug\AdventureWorksReport.xlsx";
ServerDocument serverDocument1 = null;
//</Snippet10>
//<Snippet11>
try
{
serverDocument1 = new ServerDocument(workbookPath);
CachedDataHostItem dataHostItem1 =
serverDocument1.CachedData.HostItems["AdventureWorksReport.Sheet1"];
CachedDataItem dataItem1 = dataHostItem1.CachedData["adventureWorksLTDataSet"];
if (dataItem1 != null)
{
Console.WriteLine("Before reading data from the cache dataset, the local dataset has " +
"{0} rows.", productDataSet.Product.Rows.Count.ToString());
// Read the cached data from the worksheet dataset into the local dataset.
System.IO.StringReader schemaReader = new System.IO.StringReader(dataItem1.Schema);
System.IO.StringReader xmlReader = new System.IO.StringReader(dataItem1.Xml);
productDataSet.ReadXmlSchema(schemaReader);
productDataSet.ReadXml(xmlReader);
Console.WriteLine("After reading data from the cache dataset, the local dataset has " +
"{0} rows.", productDataSet.Product.Rows.Count.ToString());
}
else
{
Console.WriteLine("The data object is not found in the data cache.");
}
}
catch (System.IO.FileNotFoundException)
{
Console.WriteLine("The specified workbook does not exist.");
}
catch (System.Xml.XmlException)
{
Console.WriteLine("The data object has invalid XML information.");
}
finally
{
if (serverDocument1 != null)
{
serverDocument1.Close();
}
Console.WriteLine("\n\nPress Enter to close the application.");
Console.ReadLine();
}
//</Snippet11>
//</Snippet9>
}
static private void ModifyCachedDataSet()
{
//<Snippet5>
//<Snippet6>
AdventureWorksDataSet.AdventureWorksLTDataSet productDataSet =
new AdventureWorksDataSet.AdventureWorksLTDataSet();
string workbookPath = System.Environment.GetFolderPath(
Environment.SpecialFolder.MyDocuments) +
@"\AdventureWorksReport\bin\Debug\AdventureWorksReport.xlsx";
ServerDocument serverDocument1 = null;
//</Snippet6>
//<Snippet7>
try
{
serverDocument1 = new ServerDocument(workbookPath);
CachedDataHostItem dataHostItem1 =
serverDocument1.CachedData.HostItems["AdventureWorksReport.Sheet1"];
CachedDataItem dataItem1 = dataHostItem1.CachedData["adventureWorksLTDataSet"];
if (dataItem1 != null)
{
Console.WriteLine("Before reading data from the cache dataset, the local dataset has " +
"{0} rows.", productDataSet.Product.Rows.Count.ToString());
// Read the cached data from the worksheet dataset into the local dataset.
System.IO.StringReader schemaReader = new System.IO.StringReader(dataItem1.Schema);
System.IO.StringReader xmlReader = new System.IO.StringReader(dataItem1.Xml);
productDataSet.ReadXmlSchema(schemaReader);
productDataSet.ReadXml(xmlReader);
Console.WriteLine("After reading data from the cache dataset, the local dataset has " +
"{0} rows.", productDataSet.Product.Rows.Count.ToString());
// Modify the prices of each product in the local dataset.
foreach (AdventureWorksDataSet.AdventureWorksLTDataSet.ProductRow row in
productDataSet.Product.Rows)
{
if (row.ProductCategoryID < 20)
{
row.ListPrice = row.ListPrice + (row.ListPrice * (Decimal).10);
}
else
{
row.ListPrice = row.ListPrice - (row.ListPrice * (Decimal).10);
}
}
// Write the modified local dataset to the worksheet dataset using the DiffGram format.
System.Text.StringBuilder stringIn = new System.Text.StringBuilder();
System.IO.StringWriter stringOut = new System.IO.StringWriter(stringIn);
productDataSet.WriteXml(stringOut, System.Data.XmlWriteMode.DiffGram);
dataItem1.Xml = stringIn.ToString();
serverDocument1.Save();
Console.WriteLine("The product prices have been modified.");
}
else
{
Console.WriteLine("The data object is not found in the data cache.");
}
}
catch (System.IO.FileNotFoundException)
{
Console.WriteLine("The specified workbook does not exist.");
}
catch (System.Xml.XmlException)
{
Console.WriteLine("The data object has invalid XML information.");
}
finally
{
if (serverDocument1 != null)
{
serverDocument1.Close();
}
Console.WriteLine("\n\nPress Enter to close the application.");
Console.ReadLine();
}
//</Snippet7>
//</Snippet5>
}
