drop-down-menu

来源： https://stackoverflow.com/questions/63107963/mvc-c-sharp-dropdown-list-showing-system-web-selectlistitem-on-the-model-and-can

来源： https://stackoverflow.com/questions/62967189/send-rows-from-a-spreadsheet-to-others-selecting-from-a-dropdown

来源： https://stackoverflow.com/questions/62967189/send-rows-from-a-spreadsheet-to-others-selecting-from-a-dropdown

来源： https://stackoverflow.com/questions/62967189/send-rows-from-a-spreadsheet-to-others-selecting-from-a-dropdown

问题 I am trying to create choropleth maps. Below is an example that works: df = px.data.gapminder().query("year==2007") fig = go.Figure(data=go.Choropleth( locations=happy['iso'], # Spatial coordinates z = happy['Happiness'].astype(float), # Data to be color-coded colorbar_title = "Happiness Score", )) fig.update_layout( title_text = 'Life Expectancy in 2007' ) fig.show() However, I would like to create a dropdown menu that will change the plotted values between different variables (e.g., Life

问题 I have models for Project and Ethic in my Rails 4 app. The ethics view has a nested fields form (using simple form simple fields for) contained in it. The ethic form fields are nested in the projects form. The ethic form fields has 2 select menus. The first menu offers a set of options for a category. The 2nd select option is a list of subcategories. I'm trying to figure out how to populate the 2nd select menu with the right options, based on the choice made in the 1st select menu. In my

问题 I have models for Project and Ethic in my Rails 4 app. The ethics view has a nested fields form (using simple form simple fields for) contained in it. The ethic form fields are nested in the projects form. The ethic form fields has 2 select menus. The first menu offers a set of options for a category. The 2nd select option is a list of subcategories. I'm trying to figure out how to populate the 2nd select menu with the right options, based on the choice made in the 1st select menu. In my

问题 I have code below that is populating a select with values from the result array. - What I want to do is create an additional select that will filter the results based on the value {tag} selected. For example: I want the first select to only have the tags as options, based on the tag selected, the second select will only show names filtered by the selected tag. I am also open to opinions on better ways to do this, for instance, if radio options work better for the filter then I would use those

问题 I have code below that is populating a select with values from the result array. - What I want to do is create an additional select that will filter the results based on the value {tag} selected. For example: I want the first select to only have the tags as options, based on the tag selected, the second select will only show names filtered by the selected tag. I am also open to opinions on better ways to do this, for instance, if radio options work better for the filter then I would use those

问题 markup: <div style="float:left;margin-top:15px;width:80px"> <asp:DropDownList ID="MyList" runat="server" Width="100px"></asp:DropDownList> </div> code: // clear vehicles list MyList.Items.Clear(); // add 'all' option MyList.Items.Add(new ListItem("ALL", "0")); // add assets foreach (CustomClass item in items) MyList.Items.Add(new ListItem(item.Name, item.ID.ToString())); No event triggering for SelectedIndexChanged since it's not necessary. When I click the button for postback, the value of