|
|
Hi all,
I have a peculiar problem in my application.
I have developed a .net windows application that interacts with a third party dll named Ltws32.dll to connect to the database HP9000 and fetch data.
I have been working with it since 3 months.
Application is completely developed and pakaged also.
Now, the first time i try to fetch data, the connection is aborting .
From the second attempt it is working fine.
This happens only the first time when the application is launched.
Another strange behavior is ,it happens only if i compile the application in release mode.In debug mode its working fine.
The connection to the database is getting established but when i try to send data to the open connection ,it fails.
What can be the reason?
Thanks.
|
|
|
|
|
have two Forms in C#. ie Form1 and Form2, Form1 contains one textBox Control. and Form2 contain one Button Control. When i press a Button of Form2 then i want the textBox of form1 will display like="Hello". is it possible ?
plz give me idea?
Sanjit.rajbanshi@wlinktech.com
|
|
|
|
|
You've asked exact the same thing 6 minutes ago and already got answers. Do not spam the forum!!
"Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning." - Rick Cook www.troschuetz.de
|
|
|
|
|
Yes, it is possible. If you have two forms in the same application then on the button click event of form 2 u can write the code like
Form frm = new Form1("Hello") // Define overloaded constructor for Form1.
frm.ShowDialog();
In form1, simply do like
public Form1(string msg)
{
this.str = msg;
}
txtBox1.Text = this.str; 
Jayant D. Kulkarni
Brainbench Certified Software Engineer in C#, ASP.NET, .NET Framework and ADO.NET
|
|
|
|
|
i have two Forms in C#. ie Form1 and Form2, Form1 contains one textBox Control. and Form2 contain one Button Control. When i press a Button of Form2 then i want the textBox of form1 will display some message like="Hello". is it possible ?
plz give me idea?
Sanjit.rajbanshi@wlinktech.com
|
|
|
|
|
|
|
Sanjib Raj wrote: s it possible ?
It is one of the basic things in Object Oriented programming.
just if you create Form2 from Form1 give a reference of form1 to form2 and have a public function in form1 that sets the text in the textBox, Vica versa
|
|
|
|
|
**TEST_TABLE
ID Name Surname
-- ---- -------
3 Jack Black
4 Marry Green
5 John Wall
I fill combobox like this;
comboBox1.ValueMember = "id";
comboBox1.DisplayMember = "name";
comboBox1.DataSource = obj; //obj is IList
So, combobox filled and show "Name"s.
How can I get selected value's ID from combobox.
For example, if I select "Marry" on the combobox, how can I get "4"?
Best Regards...
|
|
|
|
|
|
comboBox1.SelectedIndex is return selected value index number.
For example my Database (table) like this;
**TEST_TABLE
ID Name Surname
-- ---- -------
3 Jack Black
4 Marry Green
5 John Wall
If I fill the comboBox and I select the "Marry" So comboBox1.SelectedIndex return "1"
But I want to get ID. (I want to get "4" in this example).
|
|
|
|
|
Sorry,
Didn't looked at youre question carefully.
Have no experience with the binding of Database.
|
|
|
|
|
comboBox1.SelectedValue.toString()
|
|
|
|
|
comboBox1.SelectedValue.toString() --> Its return class name.
This are not work;
Convert.ToInt32(comboBox1.SelectedValue)
(string)comboBox1.SelectedValue;
comboBox1.SelectedItem.ToString();
comboBox1["id"];
comboBox1.SelectedItem["id"];
comboBox1("id");
comboBox1.SelectedItem("id");
|
|
|
|
|
And this is not work;
try
{
object o = comboBox1.SelectedValue;
int i = Convert.ToInt32(o);
}
catch (Exception ex)
{
DataRowView o = (DataRowView) comboBox1.SelectedValue;
int i = Convert.ToInt32(o["id"]);
}
|
|
|
|
|
comboBox1.SelectedValue.ToString()
Works great! 
|
|
|
|
|
comboBox1.SelectedValue.ToString() is Return Namespace name and Class name
|
|
|
|
|
You said you are using DataBase..
See the code bellow this is what I used :
namespace C_TestProject
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent(); ' Contains
}
private void Form1_Load(object sender, EventArgs e)
{
this.dB1TableAdapter.Fill(this.dbTestDataSet.DB1);
}
private void button1_Click(object sender, EventArgs e)
{
if (comboBox1.SelectedIndex >= 0)
MessageBox.Show(comboBox1.SelectedValue.ToString());
}
}
}
// code Inside InitializeComponent()
this.components = new System.ComponentModel.Container();
this.comboBox1 = new System.Windows.Forms.ComboBox();
this.button1 = new System.Windows.Forms.Button();
this.dbTestDataSet = new C_TestProject.DbTestDataSet();
this.dB1BindingSource = new System.Windows.Forms.BindingSource(this.components);
this.dB1TableAdapter = new C_TestProject.DbTestDataSetTableAdapters.DB1TableAdapter();
((System.ComponentModel.ISupportInitialize)(this.dbTestDataSet)).BeginInit();
((System.ComponentModel.ISupportInitialize)(this.dB1BindingSource)).BeginInit();
this.SuspendLayout();
//
// comboBox1
//
this.comboBox1.DataSource = this.dB1BindingSource;
this.comboBox1.DisplayMember = "EmpName";
this.comboBox1.FormattingEnabled = true;
this.comboBox1.Location = new System.Drawing.Point(62, 29);
this.comboBox1.Name = "comboBox1";
this.comboBox1.Size = new System.Drawing.Size(121, 21);
this.comboBox1.TabIndex = 0;
this.comboBox1.ValueMember = "ID";
//
// button1
//
this.button1.Location = new System.Drawing.Point(62, 90);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(121, 23);
this.button1.TabIndex = 1;
this.button1.Text = "button1";
this.button1.UseVisualStyleBackColor = true;
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// dbTestDataSet
//
this.dbTestDataSet.DataSetName = "DbTestDataSet";
this.dbTestDataSet.SchemaSerializationMode = System.Data.SchemaSerializationMode.IncludeSchema;
//
// dB1BindingSource
//
this.dB1BindingSource.DataMember = "DB1";
this.dB1BindingSource.DataSource = this.dbTestDataSet;
//
// dB1TableAdapter
//
this.dB1TableAdapter.ClearBeforeFill = true;
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(243, 229);
this.Controls.Add(this.button1);
this.Controls.Add(this.comboBox1);
this.Name = "Form1";
this.Text = "Form1";
this.Load += new System.EventHandler(this.Form1_Load);
((System.ComponentModel.ISupportInitialize)(this.dbTestDataSet)).EndInit();
((System.ComponentModel.ISupportInitialize)(this.dB1BindingSource)).EndInit();
this.ResumeLayout(false);
|
|
|
|
|
Dear Sirs,
I use Visual Studio .NET 2005 (Framework 2.0)
I use Tree-Tier architecture approach in my project, and I use NHibernate.
I get data in the Data Layer from database and initialize object.
In View Layer;
First of all I determine ValueMember and DisplayMember for ComboBox
comboBox1.ValueMember = "id";
comboBox1.DisplayMember = "name";
And determine DataSource for ComboBox. I get data in IList fromat from Data Layer.
comboBox1.DataSource = XYZ; //XYZ is a IList
Now, ComboBox list name, its OK. My problem is I get id when I select any name from combobox.
**FOR EXAMPLE:
TEST_TABLE
ID Name Surname
-- ---- -------
3 Jack Black
4 Marry Green
5 John Wall
I fill combobox like this;
comboBox1.ValueMember = "id";
comboBox1.DisplayMember = "name";
comboBox1.DataSource = obj; //obj is IList
So, combobox filled and show "Name"s.
How can I get selected value's ID from combobox.
For example, if I select "Marry" on the combobox, how can I get "4"?
Note: This ways not solve my problem.
Int32 i = Convert.ToInt32(comboBox1.SelectedValue);
Int32 i = (Int32)comboBox1.SelectedValue;
int i = (int)comboBox1.SelectedValue;
string test = (string)comboBox1.SelectedValue;
string deneme = comboBox1.SelectedItem.ToString();
object o = comboBox1.SelectedValue;
DataRowView o = (DataRowView) comboBox1.SelectedValue;
Best Regards...
|
|
|
|
|
hi
i'm working on MessageBox button of Ok and Cancel.
i want to implement different code segments when Ok button is clicked and different code segments when Cancel button is clicked.
whichever button is clicked on the message box it always returns the same "true" value.
does anyone know how to access these returned value according to the button pressed??
|
|
|
|
|
You can try this.
http://msdn2.microsoft.com/en-us/library/system.windows.forms.dialogresult.aspx
|
|
|
|
|
try this........
If MessageBox.Show("klsdf", "sdf", MessageBoxButtons.OKCancel) = DialogResult.OK Then
MsgBox("ok")
Else
MsgBox("cancel")
End If
Parwej Back...............DON of Developer.......
Parwej Ahamad
g_parwez@rediffmail.com
|
|
|
|
|
C#
if(MessageBox.Show("abc", "def", System.Windows.Forms.MessageBoxButtons.OKCancel) == DialogResult.OK)
{
}
else
{
}
All the best,
Martin
|
|
|
|
|
The message box returns a DialogResult object (example result). by having condition like this
<br />
result.toString() == "Yes"<br />
result.toString() == "Ok"<br />
result.toString() == "Cancel"<br />
.....<br />
....<br />
..<br />
.<br />
this will let you know what button is clicked
|
|
|
|
General 
News 
Suggestion 
Question 
Bug 
Answer 
Joke 
Praise 
Rant 
Admin 
Submit an article or tip
