C# - Difference When Declaring A DataSource In Markup Compared To Code Behind
Jan 13, 2011
I have a legacy solution where all the DataSources are defined in the markup for all .aspx-pages. The problem I have with this is that the DataSource get instantiated several times since it is used in page, control... What I want is to have NInject to handle the instantiation of the DataSource so this doesn't happen. I have got that part to sort of work, but when the DataSource is defined in the code-behind instead of in the markup the Page property is not set on the DataSource, does anyone know why? A simple solution to this is to set the the Page property in a base class or something, but I do think that the property should be there and want to know why.
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WebMethod:
Public Function RetrieveQueryResults(ByRef cqSession As ClearQuestOleServer.Session, _
ByVal sqlStmt As String) As List(Of SearchResultsSingleIssue)
Dim numCols As Integer, status As Integer, columnIdx As Integer
Dim numRows As Integer
Dim rowContents As String = ""
Dim colValue As New Object
Dim colLabel As New Object
Dim allitems As New List(Of SearchResultsSingleIssue)
Dim results As New SearchResultsSingleIssue
Dim cqResultSet As ClearQuestOleServer.OAdResultset
cqResultSet = cqSession.BuildSQLQuery(sqlStmt)
cqResultSet.Execute()
' Get the number of columns returned by the query.
numRows = 0
numCols = cqResultSet.GetNumberOfColumns
status = cqResultSet.MoveNext
' Collect query results.
Do While status = AD_SUCCESS
results = New SearchResultsSingleIssue
numRows = numRows + 1
For columnIdx = 1 To numCols
colLabel = cqResultSet.GetColumnLabel(columnIdx)
colValue = cqResultSet.GetColumnValue(columnIdx)
'Make sure that we dont pass along a null reference
If colValue = Nothing Then
colValue = ""
End If
Select Case colLabel
Case "ID"
results.IssueID = colValue
Case "HEADLINE"
results.Headline = colValue
Case "NAME"
results.State = colValue
Case "OE_CONTACT"
results.OEContact = colValue
Case "DESCRIPTION"
results.Further_Description = colValue
Case "PRODUCT_NAME"
results.Product_Name = colValue
Case "FUNCTIONAL_AREA"
results.Functional_Area = colValue
Case "SUBTOPIC"
results.Subtopic = colValue
Case "FOUND_VERSION"
results.Found_In = colValue
Case "SCHEDULED_VERSION"
results.Scheduled_For = colValue
Case "SYMPTOMS"
results.Symptoms = colValue
Case "AFFECTED_SYSTEMS"
results.Affected_System_Types = colValue
Case "ISSUE_TYPE"
results.Issue_Type = colValue
Case "ASSIGNED_TO"
results.Assigned_Developer = colValue
Case "TESTED_BY"
results.Assigned_Tester = colValue
Case "BUILT_VERSION"
results.Built_In = colValue
Case "TESTED_VERSION"
results.Tested_In = colValue
Case "NOTES_LOG"
results.Notes_Log = colValue
Case "CUSTOMER_SEVERITY"
results.Severity = colValue
Case "PRIORITY"
results.Priority = colValue
End Select
Next columnIdx
' Add the query row result to the compiled list of all rows.
allitems.Add(results)
status = cqResultSet.MoveNext
Loop
Return allitems
End Function
Local Windows Application Method:
private void button2_Click(object sender, EventArgs e)
{
start = DateTime.Now.TimeOfDay.Seconds;
int numCols = 0;
int status = 0;
int columnIdx = 0;
int numRows = 0;
string rowContents = "";
string colValue;
string colLabel;
List<SearchResultsSingleIssue> allitems = new List<SearchResultsSingleIssue>();
SearchResultsSingleIssue results = new SearchResultsSingleIssue();
ClearQuestOleServer.OAdResultset cqResultSet = default(ClearQuestOleServer.OAdResultset);
cqResultSet = (ClearQuestOleServer.OAdResultset)ClearQuestSession.BuildSQLQuery(sqlStatement);
cqResultSet.Execute();
// Get the number of columns returned by the query.
numRows = 0;
numCols = cqResultSet.GetNumberOfColumns();
status = cqResultSet.MoveNext();
// Collect query results.
while (status == 1)
{
results = new SearchResultsSingleIssue();
numRows = numRows + 1;
for (columnIdx = 1; columnIdx <= numCols; columnIdx++)
{
colLabel = (string)cqResultSet.GetColumnLabel(columnIdx);
colValue = (string)cqResultSet.GetColumnValue(columnIdx);
//Make sure that we dont pass along a null reference
if (colValue == null)
{
colValue = "";
}
switch (colLabel)
{
case "ID":
results.IssueID = colValue;
break;
case "HEADLINE":
results.Headline = colValue;
break;
case "NAME":
results.State = colValue;
break;
case "OE_CONTACT":
results.OEContact = colValue;
break;
case "DESCRIPTION":
results.Further_Description = colValue;
break;
case "PRODUCT_NAME":
results.Product_Name = colValue;
break;
case "FUNCTIONAL_AREA":
results.Functional_Area = colValue;
break;
case "SUBTOPIC":
results.Subtopic = colValue;
break;
case "FOUND_VERSION":
results.Found_In = colValue;
break;
case "SCHEDULED_VERSION":
results.Scheduled_For = colValue;
break;
case "SYMPTOMS":
results.Symptoms = colValue;
break;
case "AFFECTED_SYSTEMS":
results.Affected_System_Types = colValue;
break;
case "ISSUE_TYPE":
results.Issue_Type = colValue;
break;
case "ASSIGNED_TO":
results.Assigned_Developer = colValue;
break;
case "TESTED_BY":
results.Assigned_Tester = colValue;
break;
case "BUILT_VERSION":
results.Built_In = colValue;
break;
case "TESTED_VERSION":
results.Tested_In = colValue;
break;
case "NOTES_LOG":
results.Notes_Log = colValue;
break;
case "CUSTOMER_SEVERITY":
results.Severity = colValue;
break;
case "PRIORITY":
results.Priority = colValue;
break;
}
}
// Add the query row result to the compiled list of all rows.
allitems.Add(results);
status = cqResultSet.MoveNext();
}
seconds = (DateTime.Now.TimeOfDay.Seconds - start);
label3.Text = seconds.ToString();
}
The code should execute in about...6 seconds.
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