buttonclick

问题 Using R shiny, is it possible to link selectInput item to open file action button ? I would like to adapt onclick argument of action button to achieve it. Please find below a reproductible example: Supposing we have "file_1.pdf" and "file_2.pdf" on "www" folder, how can I open the file corresponding to select Input choice ? library(shinydashboard) library(shiny) ui <- dashboardPage( dashboardHeader(title = "Open file app"), dashboardSidebar(), dashboardBody( fluidRow( selectInput(inputId =

问题 I have a Test Engine that executes multiple tests, until all tests have been executed. Each test object has an Execute and Resume method. These methods return a status: Waiting for reply from COM port Waiting for button click from User Testing completed. In the GUI, the User starts the Test Engine by clicking a button. In other words, the click event for the button calls the Test Engine's start method. Next, a test may send a message through the COM port and must suspend until a message is

问题 I was wondering if there is a simple way to get an attribute of clicked element in React.js : function App () { return ( <button title={'foo'} onClick={myFunction(this)} > click me </button> ) } function myFunction(e) { alert(e.getAttribute('title')); } Right now I'm getting: TypeError: can't access property "getAttribute", e is undefined . I need it inside a function for pass the attribute into another (working) function later on. 回答1: You can access the title via currentTarget try this:

问题 I have a winform with preloaded DataGridView over it...I want to remove rows from datagridview on selecting or highlighting the rows and clicking over the button... Also want to clear all the columns.... Currently i used foreach (DataGridViewRow dgvr in dataGridView2.Rows) { if (dgvr.Selected == true) { dataGridView2.Rows.Remove(dgvr); } } but it is throwing an exception that "rows or not commited" or something....it would be appreciable if any one have any better suggestions.... 回答1: If you

问题 I have a winform with preloaded DataGridView over it...I want to remove rows from datagridview on selecting or highlighting the rows and clicking over the button... Also want to clear all the columns.... Currently i used foreach (DataGridViewRow dgvr in dataGridView2.Rows) { if (dgvr.Selected == true) { dataGridView2.Rows.Remove(dgvr); } } but it is throwing an exception that "rows or not commited" or something....it would be appreciable if any one have any better suggestions.... 回答1: If you

问题 I have a winform with preloaded DataGridView over it...I want to remove rows from datagridview on selecting or highlighting the rows and clicking over the button... Also want to clear all the columns.... Currently i used foreach (DataGridViewRow dgvr in dataGridView2.Rows) { if (dgvr.Selected == true) { dataGridView2.Rows.Remove(dgvr); } } but it is throwing an exception that "rows or not commited" or something....it would be appreciable if any one have any better suggestions.... 回答1: If you

问题 Tic-tac-toe game using python tkinter is not working correctly. Tic-tac-toe structure is correct. I just want to change the click event. Only button9 output shown when click to any button Every time I click any button this output is shown from tkinter import * bclick = True tk = Tk() tk.title("Tic Tac toe") tk.geometry("300x400") n = 9 btns = [] def ttt(button): global bclick print(button) if button["text"] == "" and bclick == True: print("if") button.config(text="X") bclick = False elif

问题 I just started learning ASP.NET Core and I was following the YouTube tutorial from Microsoft (https://www.youtube.com/watch?v=wA-3FA2kbpA&list=PLdo4fOcmZ0oW8nviYduHq7bmKode-p8Wy&index=11) and when I tried to call the function on button click, it does not work. The code is as follows: Button in HTML <button @onclick="(e => SelectProduct(product.Id))" data-toggle="modal" data-target="#productModal" class="btn btn-primary">More Info</button> @Code Element - Function void SelectProduct(string

问题 I just started learning ASP.NET Core and I was following the YouTube tutorial from Microsoft (https://www.youtube.com/watch?v=wA-3FA2kbpA&list=PLdo4fOcmZ0oW8nviYduHq7bmKode-p8Wy&index=11) and when I tried to call the function on button click, it does not work. The code is as follows: Button in HTML <button @onclick="(e => SelectProduct(product.Id))" data-toggle="modal" data-target="#productModal" class="btn btn-primary">More Info</button> @Code Element - Function void SelectProduct(string

来源： https://stackoverflow.com/questions/41961339/click-a-button-programmatically-c-sharp