如何在不打开新winform的情况下将值从gridview传递到打开的表单 [英] how to pass values from gridview to opened form without opening new winform

问题描述

嘿伙计们，

我有一点问题，因为我是个书呆子。我有这个任务要做。



i有一个表单来查找客户详细信息，并在gridview上双击所选客户，其详细信息应该传递给打开winform，但据我所知只有frm.show或frm.showdialogue打开了一个全新的winform，这不是我想要的。请帮帮我.......谢谢





i这里的代码如下

 Form_OrderEntry frm =  new  Form_OrderEntry（）; 
 frm.txtcustomercode.Text = dataGridView1.CurrentRow.Cells [ 0 ]。Value.ToString（）; 
 frm.txtcustomername.Text = dataGridView1.CurrentRow.Cells [ 1 ]。Value.ToString（）; 
 frm.Visible =  true ; 
 此 .Close（）; 

form_orderentry是我的主要表单，它应该在其customercode和name文本框中获取值。但是我得到了一个全新的窗口。

解决方案

在你的dataGridViewCell_Click事件中写下{}块的代码，如下所示

  public   void  dataGridView1_CellClick（ object  sender，DataGridViewCellEventArgs e）
 {
 frm.txtcustomercode.Text = dataGridView1.Rows [e.RowIndex] .Cells [  ColumnNameOf_CustomerCode] Value.ToString（）; 
 
 frm.txtcustomername.Text = dataGridView1.Rows [e.RowIndex] .Cells [  ColumnNameOf_CustomerName] Value.ToString（）; 
 
} 

在orderenter表单中有一个公共静态变量，像这样找到opended orderenter

使用FormCollection类获取打开的表单对象。

 FormCollection fc = Application.OpenForms; 
  foreach （表格frm  in  fc）
 {
  if （frm.name ==   orderenter ）
 {
 frm.Myvalue = customerdetails; 
 
} 
} 

或

有公共静态方法在orderenter中传递值作为参数

 FormCollection fc = Application.OpenForms; 
  foreach （表格frm  in  fc）
 {
  if （frm.name ==   orderenter ）
 {
 frm.showform（customerdetails）; 
} 
 
  //  在orderenter表格中有show showform method  
  public   static   void  showform（customerdetails）
 {
 txtcustomercode.Text = customerdetails; 
} 
 
} 

据我所知，

Form1 ---> Form2（现在当它关闭传递结果再次打开form1时）





你应该用你的形式做到这一点2



- >在 form2（其中你有写方法 声明表单级公共变量 Return_Cust_code，Return_Cust_Nm

- >现在设置变量在表单关闭方法而不是您提到的新表单开放代码

 Return_Cust_code = dataGridView1.CurrentRow.Cells [ 0 ]。Value.ToString（）; 
 Return_Cust_Nm = dataGridView1.CurrentRow.Cells [ 1 ]。Value.ToString（） ; 
  this  .DialogResult = Dialogresult.ok; 
  this  .Close（） ; 

- >现在 Form1 收到这些varibles 就像这样

< pre lang =c＃> Form1 frm = new Form1（）;
if （frm .ShowDialog（）== Dilogresult.OK）
{
string cc = frm.Return_Cust_code;
串 cn = frm.Return_Cust_Nm;
}

快乐编码！

：）

Hey guys,
i have a little problem as i m a nerd. i have this task to do.

i have a form to find the customer details and on the double click of the selected customer on gridview, its details should pass into the opened winform but as i know only frm.show or frm.showdialogue which opens a complete new winform which is not what i have wanted . please help me out.......thanks


i have a code here like this

Form_OrderEntry frm = new Form_OrderEntry();
            frm.txtcustomercode.Text = dataGridView1.CurrentRow.Cells[0].Value.ToString();
            frm.txtcustomername.Text = dataGridView1.CurrentRow.Cells[1].Value.ToString();
            frm.Visible = true;
            this.Close();

form_orderentry is my main form and it should get values in its customercode and name textbox. but i get a complete new window.

解决方案

On ur dataGridViewCell_Click event write the code of { } block,given below

public void dataGridView1_CellClick(object sender, DataGridViewCellEventArgs e)
{
frm.txtcustomercode.Text = dataGridView1.Rows[e.RowIndex].Cells["ColumnNameOf_CustomerCode"].Value.ToString();

frm.txtcustomername.Text =dataGridView1.Rows[e.RowIndex].Cells["ColumnNameOf_CustomerName"].Value.ToString();
          
}

Have a public static variable in the orderenter form,Find the opended orderenter by like this
Use FormCollection class to get the openned form object.

FormCollection fc = Application.OpenForms;
foreach (Form frm in fc)
{
  if(frm.name=="orderenter")
{
frm.Myvalue= customerdetails;

}
}

or
Have public static method in orderenter and pass the value as parameter

FormCollection fc = Application.OpenForms;
foreach (Form frm in fc)
{
  if(frm.name=="orderenter")
{
frm.showform(customerdetails);
}

// In the orderenter form have show showform method
public static void showform(customerdetails)
{
txtcustomercode.Text =customerdetails;
}

}

As I understand,
Form1 ---> Form2 (now when it close pass result to already opened form1 again)


you should do this in your form2

-> In form2 (in which you have write methoddeclare form level public variables Return_Cust_code,Return_Cust_Nm
-> now set that variables in form close method instead of that new form opening code you have mention in question

Return_Cust_code = dataGridView1.CurrentRow.Cells[0].Value.ToString();
Return_Cust_Nm = dataGridView1.CurrentRow.Cells[1].Value.ToString();
this.DialogResult= Dialogresult.ok;
this.Close();

-> now in Form1 receive these varibles like this

Form1 frm = new Form1();
if (frm.ShowDialog() == Dilogresult.OK)
{
   string cc = frm.Return_Cust_code;
   string cn = frm.Return_Cust_Nm;
}

Happy Coding!
:)

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