如何从动态创建的TemplateFIeld动态创建的下拉列表中获取值 [英] How to get the value from dropdown which is dynamically created in dynamically TemplateFIeld

问题描述

亲爱的所有人，



i想要存储动态模板字段中动态创建的下拉值。



所以如何在提交按钮上访问所选下拉值的值。



i以下使用

Dear All,

i want to store the value of dropdown which is dynamically created in dynamically template field.

so how can i access the value of selected dropdown value on the submit button.

i use below

public class AddTemplateToGridView : ITemplate
    {
        ListItemType _type;
        string _colName;

        public AddTemplateToGridView(ListItemType type, string colname)
        {
            _type = type;
            _colName = colname;
        }

        void ITemplate.InstantiateIn(System.Web.UI.Control container)
        {
            switch (_type)
            {
                case ListItemType.Item:

                    DropDownList ht = new DropDownList();
                    ht.ID = "ht"+_colName; 
                    ht.Width = 50;
                    ht.Items.Add(new ListItem("Select", "Select"));
                    ht.Items.Add(new ListItem("P", "P"));
                    ht.Items.Add(new ListItem("A", "A"));
                    ht.Items.Add(new ListItem("H", "H"));
                    ht.Items.Add(new ListItem("S", "S"));
                    ht.Items.Add(new ListItem("L", "L"));
                    ht.DataBinding += new EventHandler(ht_DataBinding);
                    container.Controls.Add(ht);
                    break;
                    
            }
        }
}

SO，我怎样才能获得价值提交按钮或其他活动的下拉菜单。



请帮助我...





谢谢和问候

Mitesh

SO, how can i get the value of dropdown in submit button or another event.

Please Help Me...


Thanks and Regards
Mitesh

推荐答案

最好的方法是通过属性发布DropDownList（或者只是SelectedValue）：

The best way is to publish DropDownList (or just SelectedValue) through a property:

public class AddTemplateToGridView : ITemplate
{
    ListItemType _type;
    string _colName;
    DropDownList _ht;

    //  publish DropDownList:
    public DropDownList InnerDropDown { get { return _ht; } } 

    //  or publish just SelectedValue:
    public string SelectedValue { get { return _ht == null ? string.Empty : _ht.SelectedValue; } }

    public AddTemplateToGridView(ListItemType type, string colname)
    {
        _type = type;
        _colName = colname;
    }

    void ITemplate.InstantiateIn(System.Web.UI.Control container)
    {
        switch (_type)
        {
            case ListItemType.Item:

                _ht = new DropDownList();
                _ht.ID = "ht"+_colName; 
                _ht.Width = 50;
                _ht.Items.Add(new ListItem("Select", "Select"));
                _ht.Items.Add(new ListItem("P", "P"));
                _ht.Items.Add(new ListItem("A", "A"));
                _ht.Items.Add(new ListItem("H", "H"));
                _ht.Items.Add(new ListItem("S", "S"));
                _ht.Items.Add(new ListItem("L", "L"));
                _ht.DataBinding += new EventHandler(ht_DataBinding);
                container.Controls.Add(_ht);
                break;
                
        }
    }
}

这篇关于如何从动态创建的TemplateFIeld动态创建的下拉列表中获取值的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！