I tried to find my answer in many sites but I think every thing is correct in my code but still the Auto Complete Extender doesn't work.
<asp:ScriptManager ID="ScriptManager1" runat="server" EnablePageMethods = "true">
</asp:ScriptManager>
<asp:TextBox ID="txtName" runat="server" Width="190px" CssClass="TextBox"></asp:TextBox>
<cc1:AutoCompleteExtender
ID="AutoCompleteExtender1" ServiceMethod="GetNamesList"
MinimumPrefixLength="1"
CompletionInterval="1000" EnableCaching="true" CompletionSetCount="10"
TargetControlID="txtName" UseContextKey="True"
runat="server">
</cc1:AutoCompleteExtender>
[System.Web.Script.Services.ScriptMethod()]
[System.Web.Services.WebMethod]
public string[] GetNamesList(string prefixText, int count, string contextKey)
{
DataSet dtst = new DataSet();
SqlConnection sqlCon = new SqlConnection(System.Configuration.ConfigurationManager.AppSettings["ConStr"]);
string strSql = "SELECT FirstName FROM finex.tbl_SenderInfo WHERE FirstName LIKE '" + prefixText + "%' ";
SqlCommand sqlComd = new SqlCommand(strSql, sqlCon);
sqlCon.Open();
SqlDataAdapter sqlAdpt = new SqlDataAdapter();
sqlAdpt.SelectCommand = sqlComd;
sqlAdpt.Fill(dtst);
string[] cntName = new string[dtst.Tables[0].Rows.Count];
int i = 0;
try
{
foreach (DataRow rdr in dtst.Tables[0].Rows)
{
cntName.SetValue(rdr["FirstName"].ToString(), i);
i++;
}
}
catch { }
finally
{
sqlCon.Close();
}
return cntName;
}
You will probably need something like this within your <asp:AutoCompleteExtender> tag with the name of the page that contains your web method:
ServicePath="MyFile.aspx"
Also try the following at the top of your aspx file:
<%# Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="ajaxToolkit" %>
<%# Register TagPrefix="asp" Namespace="AjaxControlToolkit" Assembly="AjaxControlToolkit" %>
And this somewhere within the main contents of your page, say after the opening body tag:
<ajaxToolkit:ToolkitScriptManager ID="ToolkitScriptManager1" EnablePageMethods="true"
runat="server">
</ajaxToolkit:ToolkitScriptManager>
I just cut those lines out of one of my projects that works, some may have already been included by the IDE depending on how you added things, so check if they're there already before adding.
Related
I am new to .NET Core. I have defined the connection string in appsettings.json like this:
"ConnectionStrings": {
"TestBD": "Server=localhost;Database=Test;Trusted_Connection=True;MultipleActiveResultSets=true"
}
I am not using Entity Framework. I need to connect to the database using this connection string from the Program.cs file.
Any help is really appreciated. Thanks
You refer the following sample code to use ADO.NET in Asp.net 6 program.cs:
//required using Microsoft.Data.SqlClient;
app.MapGet("/movies", () =>
{
var movies = new List<Movie>();
//to get the connection string
var _config = app.Services.GetRequiredService<IConfiguration>();
var connectionstring = _config.GetConnectionString("DefaultConnection");
//build the sqlconnection and execute the sql command
using (SqlConnection conn = new SqlConnection(connectionstring))
{
conn.Open();
string commandtext = "select MovieId, Title, Genre from Movie";
SqlCommand cmd = new SqlCommand(commandtext, conn);
var reader = cmd.ExecuteReader();
while (reader.Read())
{
var movie = new Movie()
{
MovieId = Convert.ToInt32(reader["MovieId"]),
Title = reader["Title"].ToString(),
Genre = reader["Genre"].ToString()
};
movies.Add(movie);
}
}
return movies;
});
The result like this:
I am trying to post my inputs to my SQL Server database. I can in fact POST to the database, but I get back a blank response. I know it's because I am returning "Success" instead of my variables but how to I correctly format that for the return statement?
POST method:
[HttpPost]
public JsonResult Post(Weather Wea)
{
string query = #"INSERT INTO dbo.Information (Date, TemperatureC, TemperatureF, Summary) VALUES ('" + Wea.Date + #"'
,'" + Wea.TemperatureC + #"'
,'" + Wea.TemperatureF + #"'
,'" + Wea.Summary + #"'
)";
DataTable table = new DataTable();
string sqlDataSource = _configuration.GetConnectionString("WeatherAppCon");
SqlDataReader myReader;
using (SqlConnection myCon = new SqlConnection(sqlDataSource))
{
myCon.Open();
using (SqlCommand myCommand = new SqlCommand(query, myCon))
{
myReader = myCommand.ExecuteReader();
table.Load(myReader);
myReader.Close();
myCon.Close();
}
}
return new JsonResult("Success");
}
Front-end POST
export class PostDataComponent {
baseUrl: string;
date: number;
temperatureC: number;
summary: string;
weatherForm: FormGroup;
constructor(public http: HttpClient, #Inject('BASE_URL') baseUrl: string, private formBuilder: FormBuilder) {
this.baseUrl = "https://localhost:44347/WeatherForecast";
this.weatherForm = formBuilder.group({
Date: new FormControl(),
TemperatureC: new FormControl(),
Summary: new FormControl()
});
}
CreateData() {
const params = new HttpParams({
fromObject: {
'date': this.weatherForm.value.Date.toString(),
'temperatureC': this.weatherForm.value.TemperatureC.toString(),
'summary': this.weatherForm.value.Summary.toString()
}
});
console.log(params);
this.http.post(this.baseUrl, {},{ params: params }).subscribe(data => {
console.log(data);
});
}
}
Couple things here.
As marc_s commented, you should be using parameterization instead of concatenating to avoid any potential SQL injection:
string query = #"INSERT INTO dbo.Information (Date, TemperatureC, TemperatureF, Summary) VALUES (#Date, #TemperatureC, #TemperatureF, #Summary)";
...
using (System.Data.SqlClient.SqlCommand myCommand = new SqlCommand(query, myCon))
{
myCommand.Parameters.AddWithValue("#Date", Wea.Date);
myCommand.Parameters.AddWithValue("#TemperatureC", Wea.TemperatureC);
myCommand.Parameters.AddWithValue("#TemperatureF", Wea.TemperatureF);
myCommand.Parameters.AddWithValue("#Summary", Wea.Summary);
...
Unless you have a trigger on your target table with an output, your query isn't returning any data (just the number of rows inserted) and your SqlDataReader is empty. You could get rid of the reader/DataTable and use myCommand.ExecuteScalar() instead in this case. If you do have a trigger outputting the inserted data, disregard this.
If you don't have an output trigger but do still need to return the inserted values for whatever reason, you could keep your SqlDataReader and update your query to the following
string query = #"INSERT INTO dbo.Information (Date, TemperatureC, TemperatureF, Summary)
OUTPUT inserted.Date,inserted.TemperatureC,inserted.TemperatureF,inserted.Summary
VALUES (#Date, #TemperatureC, #TempreatureF, #Summary)";
Without knowing the response format you're looking for, it's hard to give an answer on how to generate it. If you need to return the inserted values, you could use the OUTPUT keyword as in the previous bullet and serialize your DataTable.
I am trying to write a custom object and have to retrieve one custom related field from custom object Course Master(master) to detail object Training deals. This code is showing error
List<List<String>> strList = new List<List<String>>();
List<Training_deal__c> td = [select name, Course_master__r.course__c from Training_deal__c];
for(Training_deal__c t : td){
List<String> tempList = new List<String>();
tempList.add('Training Deals');
tempList.add(t.name);
tempList.add(t.course__c);
strList.add(tempList);
}
Try This
tempList.add(t.Course_master__r.course__c);
I tried to like this and it is working properly
List<List<String>> strList = new List<List<String>>();
List<Training_deal__c> td = [select name, Course_master__r.course__c from Training_deal__c];
for(Training_deal__c t : td){
List<String> tempList = new List<String>();
tempList.add('Training Deals');
tempList.add(t.name);
tempList.add(t.Course_master__r.course__c);
strList.add(tempList);
}
I want to create a method to get names of all sheets in a workbook. My workbook has 7 sheets. If I want to read and save names of sheets to the variable excelSheets, I receive 9 names, where two names response to non-exists sheets ("lists$" and "TYPAB").
I don't understand where is the problem? How can I get names only the existing sheets?
public List<string> NamesOfSheets(string filename)
{
string con = #"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + filename + ";Extended Properties='Excel 12.0;HDR=Yes;'";
using (OleDbConnection connection = new OleDbConnection(con))
{
connection.Open();
List<string> excelSheets;
try
{
DataTable dt = connection.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);
excelSheets = dt.Rows.Cast<DataRow>()
.Select(i => i["TABLE_NAME"].ToString()).ToList();
return excelSheets;
}
catch (Exception)
{
throw new Exception("Failed to get SheetName");
}
}
}
Oscar, thanks for your help, but office interlop doesn't solve my problem.
I found that "lists$" is hidden sheet, so only name TYPAB doesn't respond to any existing sheet.
So I added clause where and problem is solved. :)
public List<string> NamesOfSheets(string filename)
{
string con = #"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + filename + ";Extended Properties='Excel 12.0;HDR=Yes;'";
List<string> excelSheets;
using (OleDbConnection connection = new OleDbConnection(con))
{
connection.Open();
try
{
DataTable dt = connection.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);
excelSheets = dt.Rows.Cast<DataRow>()
.Where(i => i["TABLE_NAME"].ToString().EndsWith("$") || i["TABLE_NAME"].ToString().EndsWith("$'"))
.Select(i => i["TABLE_NAME"].ToString()).ToList();
return excelSheets;
}
catch (Exception)
{
throw new Exception("Failed to get SheetName");
}
}
}
Why not use Office Interop for this?
foreach (Excel.Worksheet displayWorksheet in Globals.ThisWorkbook.Worksheets)
{
Debug.WriteLine(displayWorksheet.Name);
}
https://msdn.microsoft.com/en-us/library/59dhz064.aspx
I would like to know how the XtraGrid and the BandedGrid play togehter and are bound to the underlaying data. The documentation has some explanatory tl;dr-text but i am missing a full working example to set it up in code. So it took me about 2 hours to figure it out. Based on this blog entry
i would like to post my answer here.
If there is a better way to put the pieces together as in my answer below i would love to know about it.
First you have to know that you can bind a plain DataTable to the XtraGrid and that the creation of the banded grid is independent.
Below you can see a new instance of XtraGrid is created. It MainView is set to be a BandedGridView
private void LoadAndFillXtraGrid() // object sender, EventArgs e
{
grid = new DevExpress.XtraGrid.GridControl();
grid.Dock = DockStyle.Fill;
// set the MainView to be the BandedGrid you are creating
grid.MainView = GetBandedGridView();
// set the Datasource to a DataTable
grid.DataSource = GetDataTable();
// add the grid to the form
this.Controls.Add(grid);
grid.BringToFront();
}
Above the line grid.MainView = GetBandedGridView(); set a BandedGridView as the MainView of the Xtragrid. Below you see how to create this BandedGridView
//Create a Banded Grid View including the grindBands and the columns
private BandedGridView GetBandedGridView()
{
BandedGridView bandedView = new BandedGridView();
// Set Customer Band
SetGridBand(bandedView, "Customer",
new string[3] { "CustomerId", "LastName", "FirstName" });
SetGridBand(bandedView, "Address", new string[3] { "PLZ", "City", "Street" });
return bandedView;
}
To set up the GridBand you have to create a GridBand and attach it to the bandedGridView by calling bandedView.Columns.AddField for each column
private void SetGridBand(BandedGridView bandedView, string gridBandCaption
, string[] columnNames)
{
var gridBand = new GridBand();
gridBand.Caption = gridBandCaption;
int nrOfColumns = columnNames.Length;
BandedGridColumn[] bandedColumns = new BandedGridColumn[nrOfColumns];
for (int i = 0; i < nrOfColumns; i++)
{
bandedColumns[i] = (BandedGridColumn)bandedView.Columns.AddField(columnNames[i]);
bandedColumns[i].OwnerBand = gridBand;
bandedColumns[i].Visible = true;
}
}
The DataSource can be a plain DataTable that contains some columns. If the name of the column in the datatable matches the names of the BandedGridColumn the will be automatically mapped. As you can see i added a column NotMapped in the datatable which is not visible in the screenshot above:
private DataTable GetDataTable()
{
DataTable dt = new DataTable();
dt.Columns.AddRange(new DataColumn[] {
new DataColumn("CustomerId", typeof(Int32)),
new DataColumn("NotMapped", typeof(Int32)),
new DataColumn("LastName", typeof(String)),
new DataColumn("FirstName", typeof(String)),
new DataColumn("PLZ", typeof(Int32)),
new DataColumn("City", typeof(String)),
new DataColumn("Street", typeof(String))
});
dt.Rows.Add(1, 0, "John", "Barista", 80245, "Manhatten", "Broadway");
dt.Rows.Add(2, 0, "Mike", "Handyman", 87032, "Brooklyn", "Martin Luther Drive");
dt.Rows.Add(3, 0, "Jane", "Teacher", 80245, "Manhatten", "Broadway 7");
dt.Rows.Add(4, 0, "Quentin", "Producer", 80245, "Manhatten", "Broadway 15");
return dt;
}
If someone has a more elegant way to put the pieces together i would love to know about it.