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I created a MDI form & its child,
On child form I am doing database interaction and loading
the datatable object with table name "table1".
after doing all this when i run the MDI form & open up the child from,
its giving the following error:
"Cannot create a child list for the field table1"
Will anyone tells me the reason, or how to rectify this?
Thanks & regards to all.
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Here somthing more if u can help?
When i try developing the same application using the VS designer its working fine, I created the MDI form, on its child form thru connection wizard i created the connection, dataadapter, dataset.
And write the correponding code for manipulating the data on child form,
everything working fine.
But when i am doing this thru coding, error is generating which i had mention earlier.
What i am doing is:
-> created a seprate class, on this creating the DB connectivity,
-> create the commandBuilder object, and the GetUpdateCommand, GetUpdateDelete, GetUpdateInsert.
-> filling the datatable object, returning it to child form class file.
on child class file performing the function.
Also when i compare the VS designer code & my code, some lines i am unable to understand like:
((System.ComponentMode1.IsupportIntialize)(this.dsComp)).BeginInit();
((System.ComponentMode1.IsupportIntialize)(this.dsComp)).EndInit();
And also i want to know what is difference when we creating DB connection thru wizard & connection thru coding?
which method one should use?
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I'm using SQL Server 2005 as backend for C#.Net 2005. When I am trying to connnect the database which is in other system, it thrown the following exception..
"Login failed for user ''. The user is not associated with a trusted SQL Server connection."
Connection string is
SqlConnection conn = new SqlConnection("Data Source=Danny\\SQLExpress;initial catalog=Games;trusted_connection=true;user=sa;pwd=lalitha");
Please guide me to solve this..
Regards,
Lalitha.
modified on Thursday, February 21, 2008 6:26 AM
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Hi,
you have connection string:
Connection string is
SqlConnection conn = new SqlConnection("Data Source=Danny\\SQLExpress;initial catalog=Games;trusted_connection=true;user=sa;pwd=lalitha");
you have given trusted_connection=true, given user and password details.
If you have access to Sql server with windows authentication, you should provide trusted_connection=true in connection string,
else you have to provide user and pwd details.
your connection string should be in either formats:
1. Data Source=Danny\\SQLExpress;initial Catalog=Games;trusted_connection=true
2. Data Source=Danny\\SQLExpress;initial Catalog=Games;user=sa;pwd=lalitha
If you specify trusted_connection=true, you need not to give user and pwd details.
I think you dont have windows authentication for SQL server, so you are getting error like above.
try with 2nd option of connection string, it should work 
All the best!
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Good idea removing that IP address 
He who makes a beast out of himself gets rid of the pain of being a man
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Hello Lalitha,
The SQL Server seems to be configured for Windows Authentication and you are trying to connect to the server using SQL Login. Either Change the Authentication mode to Mixed Mode or Connect using your domain account
http://support.microsoft.com/kb/555332
Regards,
Dave
Dave Traister
Software Engineer
ComponentOne LLC
www.ComponentOne.com
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Has anyone used NetworkStreams asynchronously? How do things change if you wrap the NetworkStream in an SSLStream?
Can I run two threads using the same stream calling receive and send on it at the same time or will I have to use async callbacks?
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I don't know the answer to your first question, but to answer your second question, streams are not thread safe, so no, you cannot read and write to it in parallel using 2 threads. You would need to do it on a single thread using message posting or callbacks, or using locking so that both threads don't try to access the stream simultaneously.
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Hi there,
I had download a C# code for connecting a mobile with a computer using the bluetooth,
but I had for the first time see these :
using System.Linq;
using C4F.DevKit.Bluetooth.DeviceAndServiceDiscovery;
using system.core;
using system.data.datasetextensions;
I know I have to download the appropriate library, I have searched the net but I could not successfully find'm
if you know where can I download them from , please send me back as soon as possible
Thank you , your help is valuable .
There is always something to learn
There is always something to learn
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Try downloading Visual C# 2008 Express. The C4F is the coding for fun stuff that MS has released, and the other items are part of .NET 3.5.
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thanks for replaying
I am using .Net Visual Studio 2005 , and I was wondering if there is some thing to be downloaded can enable me to run the program ?
In other word what can I do to run the program using .Net 2005
?
There is always something to learn
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Rewrite it. If it's using things like Linq then it's either using the Beta Orcas stuff or it's a .NET 3.5 application. Alternatively, you could upgrade to VS 2008 (the Express editions are free and available to use now).
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hi friends,Im using validation summary,and i set ShowMessageBox=true.it Shows msgbox,but i cant focus to first control what it lists me...i would like set focus..how can i do it my friend?
Hi,Im Razana
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this.ActiveControl = myControl;
Where myControl is any control such as a button, textBox etc.
He who makes a beast out of himself gets rid of the pain of being a man
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// ASCX file
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
public partial class PresentationLayer_Controls_ManagePaymentDetailsControl : System.Web.UI.UserControl
{
Payment ObjXMLData = new Payment();
public static int editstatus =0;
protected void Page_Load(object sender, EventArgs e)
{
try
{
if (!IsPostBack)
{
Session["update"] = Server.UrlEncode(System.DateTime.Now.ToString()); // to avoid page refresh problem
//string opno = "0p005";
//txtOpno.Text = opno;
txtDate.Text = ObjXMLData.ConvertDate(DateTime.Today.Date.ToString().Substring(0, 10));
txtDate.Text = txtDate.Text.Substring(3, 2) + "/" + txtDate.Text.Substring(0, 2) + "/" + txtDate.Text.Substring(6, 4);
try
{
//GetData(opno, Server.MapPath("Amount.xml").ToString());
BindGrid();
}
catch (Exception ex)
{
lbl_Error.Text = ex.Message;
}
}
}
catch (Exception ex)
{
string s = ex.Message;
}
}
public void GetData(string opno, string path,int estatus)
{
try
{
DataSet ds;
DataTable dt = ObjXMLData.GetByOpNo(opno, path);
if (dt.Columns.Count > 0)
{
if (estatus == 1)
{
txtOpno.Text = dt.Rows[0].Table.Rows[0]["OpNo"].ToString();
txtName.Text = dt.Rows[0].Table.Rows[0]["Name"].ToString();
txtPaidAmount.Text = dt.Rows[0].Table.Rows[0]["PaidAmount"].ToString();
txtTotalAmount.Text = dt.Rows[0].Table.Rows[0]["TotalAmount"].ToString();
txtBalanceAmount.Text = dt.Rows[0].Table.Rows[0]["BalanceAmount"].ToString();
}
else
{
txtOpno.Text = dt.Rows[0].Table.Rows[0]["OpNo"].ToString();
txtName.Text = dt.Rows[0].Table.Rows[0]["Name"].ToString();
//txtPaidAmount.Text = dt.Rows[0].Table.Rows[0]["PaidAmount"].ToString();
//txtTotalAmount.Text = dt.Rows[0].Table.Rows[0]["TotalAmount"].ToString();
txtBalanceAmount.Text = dt.Rows[0].Table.Rows[0]["BalanceAmount"].ToString();
}
}
else
{
string msg = "<script type='text/javascript'>alert('No Records Found');</script> ";
Page.ClientScript.RegisterStartupScript(this.GetType(),"msg",msg);
}
}
catch (Exception ex)
{
string s = ex.Message;
}
}
public void BindGrid()
{
try
{
DataTable dt = null;
dt = ObjXMLData.GetAll(Server.MapPath("Amount.xml").ToString());
if (dt.Rows.Count != 0)
{
DataGrid1.DataSource = dt;
DataGrid1.DataBind();
lblcount.Text = "Total No of Records:" + dt.Rows.Count;
int pindex = DataGrid1.CurrentPageIndex + 1;
lblpageindex.Text = "Page" + pindex + " of " + DataGrid1.PageCount.ToString();
}
else
PageList.Attributes.Add("style", "display:none");
}
catch (Exception ex)
{
lbl_Error.Text = ex.Message;
}
}
protected void btnSave_Click(object sender, EventArgs e)
{
try
{
DataTable dt = ObjXMLData.GetByOpNo(txtOpno.Text.Trim().ToUpper(), Server.MapPath("Amount.xml").ToString());
Double Result;
string totalamount;
if (Session["update"].ToString() == ViewState["update"].ToString()) // to avoid page refresh problem
{
if (CheckBox1.Checked == false)
totalamount = dt.Rows[0].Table.Rows[0]["TotalAmount"].ToString();
else
totalamount = txtTotalAmount.Text;
if (Convert.ToDouble(totalamount) >= Convert.ToDouble(txtPaidAmount.Text))
{
if (CheckBox1.Checked == true)
{
Result = ObjXMLData.Update(txtOpno.Text.ToUpper(), DateTime.Now.ToString(), txtName.Text,
Convert.ToDouble(txtTotalAmount.Text) + Convert.ToDouble(txtBalanceAmount.Text), (Convert.ToDouble(dt.Rows[0].Table.Rows[0]["PaidAmount"].ToString()) + Convert.ToDouble(txtPaidAmount.Text)),
Convert.ToDouble(Convert.ToDouble(dt.Rows[0].Table.Rows[0]["TotalAmount"].ToString()) - (Convert.ToDouble(dt.Rows[0].Table.Rows[0]["PaidAmount"].ToString()) + Convert.ToDouble(txtPaidAmount.Text))), Server.MapPath("").ToString());
}
else
{
Result = ObjXMLData.Update(txtOpno.Text.ToUpper(), DateTime.Now.ToString(), txtName.Text,
Convert.ToDouble(dt.Rows[0].Table.Rows[0]["TotalAmount"].ToString()), (Convert.ToDouble(dt.Rows[0].Table.Rows[0]["PaidAmount"].ToString()) + Convert.ToDouble(txtPaidAmount.Text)),
Convert.ToDouble(Convert.ToDouble(dt.Rows[0].Table.Rows[0]["TotalAmount"].ToString()) - (Convert.ToDouble(dt.Rows[0].Table.Rows[0]["PaidAmount"].ToString()) + Convert.ToDouble(txtPaidAmount.Text))), Server.MapPath("").ToString());
}
if (Result >= 1)
{
lbl_Error.Text = " Trasaction Status : Success ";
BindGrid();
}
else
{
lbl_Error.Text = " Transaction Status : Fail ";
}
}
else
{
lbl_Error.Text = " Transaction Status : Fail ";
}
}
}
catch (Exception ex)
{
string s = ex.Message;
}
}
protected void Page_PreRender(Object s, System.EventArgs e)
{
ViewState["update"] = Session["update"];
}
protected void DataGrid1_ItemCommand(object source, DataGridCommandEventArgs e)
{
if (e.CommandName == "Editing")
{
editstatus = 1;
CheckBox1.Checked = true;
total.Attributes.Add("style", "Display:block");
GetData(e.CommandArgument.ToString(), Server.MapPath("Amount.xml").ToString(), editstatus);
}
}
protected void btnReset_Click(object sender, EventArgs e)
{
editstatus = 0;
txtBalanceAmount.Text = "";
txtOpno.Text = "";
txtPaidAmount.Text = "";
txtTotalAmount.Text = "";
txtName.Text = "";
}
protected void txtOpno_TextChanged(object sender, EventArgs e)
{
if (txtOpno.Text != "")
{
editstatus = 0;
GetData(txtOpno.Text.Trim().ToUpper(), Server.MapPath("Amount.xml").ToString(), editstatus);
}
}
protected void txtTotalAmount_TextChanged(object sender, EventArgs e)
{
DataTable dt = ObjXMLData.GetByOpNo(txtOpno.Text.Trim().ToUpper(), Server.MapPath("Amount.xml").ToString());
if (editstatus == 0)
{
if (txtTotalAmount.Text.Trim() != "" && txtPaidAmount.Text.Trim() != "" && CheckBox1.Checked == true)
txtBalanceAmount.Text = Convert.ToString((Convert.ToDouble(txtTotalAmount.Text) + Convert.ToDouble(dt.Rows[0].Table.Rows[0]["BalanceAmount"].ToString())) - Convert.ToDouble(txtPaidAmount.Text));
else if (txtPaidAmount.Text.Trim() != "")
txtBalanceAmount.Text = Convert.ToString(Convert.ToDouble(dt.Rows[0].Table.Rows[0]["BalanceAmount"].ToString()) - Convert.ToDouble(txtPaidAmount.Text));
else
txtBalanceAmount.Text = dt.Rows[0].Table.Rows[0]["BalanceAmount"].ToString();
}
else
{
if (txtTotalAmount.Text.Trim() != "" && txtPaidAmount.Text.Trim() != "")
txtBalanceAmount.Text = Convert.ToString(Convert.ToDouble(txtTotalAmount.Text) - Convert.ToDouble(txtPaidAmount.Text));
else
txtBalanceAmount.Text = dt.Rows[0].Table.Rows[0]["BalanceAmount"].ToString();
}
}
protected void txtPaidAmount_TextChanged(object sender, EventArgs e)
{
DataTable dt = ObjXMLData.GetByOpNo(txtOpno.Text.Trim().ToUpper(), Server.MapPath("Amount.xml").ToString());
if (editstatus == 0 )
{
if (txtTotalAmount.Text.Trim() != "" && txtPaidAmount.Text.Trim() != "" && CheckBox1.Checked == true)
txtBalanceAmount.Text = Convert.ToString((Convert.ToDouble(txtTotalAmount.Text) + Convert.ToDouble(dt.Rows[0].Table.Rows[0]["BalanceAmount"].ToString())) - Convert.ToDouble(txtPaidAmount.Text));
else if (txtPaidAmount.Text.Trim() != "")
txtBalanceAmount.Text = Convert.ToString(Convert.ToDouble(dt.Rows[0].Table.Rows[0]["BalanceAmount"].ToString()) - Convert.ToDouble(txtPaidAmount.Text));
else
txtBalanceAmount.Text = dt.Rows[0].Table.Rows[0]["BalanceAmount"].ToString();
}
else
{
if (txtTotalAmount.Text.Trim() != "" && txtPaidAmount.Text.Trim() != "")
txtBalanceAmount.Text = Convert.ToString(Convert.ToDouble(txtTotalAmount.Text) - Convert.ToDouble(txtPaidAmount.Text));
else
txtBalanceAmount.Text = dt.Rows[0].Table.Rows[0]["BalanceAmount"].ToString();
}
}
protected void DataGrid1_PageIndexChanged(object source, DataGridPageChangedEventArgs e)
{
try
{
DataGrid1.CurrentPageIndex = e.NewPageIndex;
int pindex = DataGrid1.CurrentPageIndex + 1;
lblpageindex.Text = "Page" + pindex + " of " + DataGrid1.PageCount.ToString();
BindGrid();
}
catch (Exception ex)
{
string s = ex.Message;
}
}
protected void ddlpagecount_SelectedIndexChanged(object sender, EventArgs e)
{
try
{
DataTable dt = null;
dt = ObjXMLData.GetAll(Server.MapPath("Amount.xml").ToString());
DataGrid1.CurrentPageIndex = 0;
if (ddlpagecount.SelectedValue == "All")
{
DataGrid1.PageSize = dt.Rows.Count;
}
else
{
DataGrid1.PageSize = Convert.ToInt32(ddlpagecount.SelectedValue);
}
BindGrid();
int pindex = DataGrid1.CurrentPageIndex + 1;
lblpageindex.Text = "Page" + pindex + " of " + DataGrid1.PageCount.ToString();
}
catch (Exception ex)
{
string s = ex.Message;
}
}
protected void CheckBox1_CheckedChanged(object sender, EventArgs e)
{
if(CheckBox1.Checked == true)
total.Attributes.Add("style","Display:block");
else
total.Attributes.Add("style", "Display:none");
}
}
srinivas
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using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
/// <summary>
/// Summary description for Payment
/// </summary>
public class Payment
{
public Payment()
{
//
// TODO: Add constructor logic here
//
}
public DataTable GetAll(string Path)
{
DataTable dt = new DataTable();
DataSet ds = new DataSet();
ds.ReadXml(Path + "");
DataTable dt_ret = ds.Tables[0];
return dt_ret;
}
public DataTable GetByOpNo(string OpNo, string Path)
{
DataSet ds = new DataSet();
DataTable dt = new DataTable();
ds.ReadXml(Path);
DataTable dt_ret = ds.Tables[0];
int b = 0;
//INSTANT C# NOTE: The ending condition of VB 'For' loops is tested only on entry to the loop. Instant C# has created a temporary variable in order to use the initial value of dt_ret.Rows.Count for every iteration:
int tempFor1 = dt_ret.Rows.Count;
for (b = 0; b < tempFor1; b++)
{
if (OpNo.ToString().ToUpper().ToString() == dt_ret.Rows[b]["OpNo"].ToString().ToUpper().ToString())
{
DataRow dr = null;
dt.Columns.Add("ID");
dt.Columns.Add("OpNo");
dt.Columns.Add("Date");
dt.Columns.Add("Name");
dt.Columns.Add("TotalAmount");
dt.Columns.Add("PaidAmount");
dt.Columns.Add("BalanceAmount");
dr = dt.NewRow();
dr["ID"] = dt_ret.Rows[b]["ID"];
dr["OpNo"] = dt_ret.Rows[b]["OpNo"].ToString().ToUpper();
dr["Date"] = dt_ret.Rows[b]["Date"];
dr["Name"] = dt_ret.Rows[b]["Name"];
dr["TotalAmount"] = dt_ret.Rows[b]["TotalAmount"];
dr["PaidAmount"] = dt_ret.Rows[b]["PaidAmount"];
dr["BalanceAmount"] = dt_ret.Rows[b]["BalanceAmount"];
dt.Rows.Add(dr);
return dt;
}
}
return dt;
}
public long Update(string OpNo, string Date, string Name, Double TotalAmount,
Double PaidAmount, Double BalanceAmount, string Path)
{
try
{
DataSet ds = new DataSet();
ds.ReadXml(Path + "/Amount.xml");
DataRow dr = null;
dr = ds.Tables[0].NewRow();
int a = 0;
int b = 0;
//INSTANT C# NOTE: The ending condition of VB 'For' loops is tested only on entry to the loop. Instant C# has created a temporary variable in order to use the initial value of ds.Tables(0).Rows.Count for every iteration:
int tempFor1 = ds.Tables[0].Rows.Count;
string s = "";
for (b = 0; b < tempFor1; b++)
{
if (OpNo.ToString().ToUpper() == ds.Tables[0].Rows[b]["OpNo"].ToString().ToUpper())
{
s = "abc"; a = b;
}
}
//for (b = 0; b < tempFor1; b++)
//{
if (s.ToString() == "abc")
{
if (OpNo.ToString().ToUpper().ToString() == ds.Tables[0].Rows[a]["OpNo"].ToString().ToUpper().ToString())
{
ds.Tables[0].Rows[a]["OpNo"] = OpNo.ToUpper();
ds.Tables[0].Rows[a]["Date"] = Date;
ds.Tables[0].Rows[a]["Name"] = Name;
ds.Tables[0].Rows[a]["TotalAmount"] = TotalAmount;
ds.Tables[0].Rows[a]["PaidAmount"] = PaidAmount;
ds.Tables[0].Rows[a]["BalanceAmount"] = BalanceAmount;
ds.WriteXml(Path + "/Amount.xml");
}
}
else
{
try
{
dr = ds.Tables[0].NewRow();
if (ds.Tables[0].Rows.Count > 0)
{
dr["ID"] = System.Convert.ToInt64(ds.Tables[0].Rows[ds.Tables[0].Rows.Count - 1]["id"]) + 1;
}
else
{
dr["ID"] = 1;
}
dr["OpNo"] = OpNo.ToUpper();
dr["Date"] = Date;
dr["Name"] = Name;
dr["TotalAmount"] = TotalAmount;
dr["PaidAmount"] = PaidAmount;
dr["BalanceAmount"] = BalanceAmount;
ds.Tables[0].Rows.Add(dr);
ds.WriteXml(Path + "/Amount.xml");
return 1;
}
catch (Exception ex)
{
return 0;
}
}
//}
return 1;
}
catch (Exception ex)
{
return 0;
}
}
//*****************************************************************************
//*************** Converting mm/dd/yyyy
//*****************************************************************************
public string ConvertDate(string s)
{
string p = "";
string[] dttime = s.ToString().Split('/');
for (int i = 0; i < dttime.Length; i++)
{
if (i == 0)
{
if (int.Parse(dttime[i].ToString()) < 10)
p = "0" + int.Parse(dttime[i].ToString());
else
p = dttime[i].ToString();
}
else if (i == 1)
{
if (int.Parse(dttime[i].ToString()) < 10)
p += "/" + "0" + int.Parse(dttime[i].ToString());
else
p += "/" + int.Parse(dttime[i].ToString());
}
else if (i == 2)
p += "/" + dttime[i].ToString();
}
return p;
}
}
srinivas
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And your question is what? Other than your inability to change the default name of any of the stuff you've dropped on your form, I can't actually see what you're trying to do unless you've mistaken CodeProject for SourceSafe.
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Pete O'Hanlon wrote: unless you've mistaken CodeProject for SourceSafe
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hi All,
i want to scroll two listviews to be scrolled simeltaniously.
so which event handler of listview shud be used?
& how to code for this stuff........
so plz help me for this..
thanx in advance......
Best Regards,
Dnyan
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The scroll event seems the obvious choice, when one scrolls, check if the other is out of sync and if so, scroll it. Don't just scroll it, your big issue will be making sure the two events don't keep just scrolling each others windows, until the stack overflows.
Christian Graus - Microsoft MVP - C++
"also I don't think "TranslateOneToTwoBillion OneHundredAndFortySevenMillion FourHundredAndEightyThreeThousand SixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne ( offering help to someone who really needed it ) ( spaces added for the benefit of people running at < 1280x1024 )
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hi Christian Graus,
i think u r right?
but now consider there is same size always......
so both shud syncro simeltaiously........
plz give me some solution
thanx
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HI ,
I am developing a small application in which C# reads a file make changes to it and saves it.
The txt files contains dome configuration values say
TimeOut=30<br />
ID=abcd<br />
Scope=Allowed<br />
.<br />
.<br />
.<br />
1.In my screen i also want to show these values, so what is the method to fetch individual values
2.When i make any change to the value i want it to be saved in that particular line itself.
Thanks in Advance.
Deepak Surana
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Why are you using an ini file and not XML ?
Christian Graus - Microsoft MVP - C++
"also I don't think "TranslateOneToTwoBillion OneHundredAndFortySevenMillion FourHundredAndEightyThreeThousand SixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne ( offering help to someone who really needed it ) ( spaces added for the benefit of people running at < 1280x1024 )
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