按下按钮时如何获取gridview checkboxfield值？ [英] How do I get the gridview checkboxfield value when I press a button?

问题描述

我有一个带有checkboxfield列的gridview，但是当我按下asp.net按钮时，由于回发，所有复选框都被检错。



当我用C＃单击我的codeBehind中的按钮时，我想获取复选框值。



是否可以？



解决方案：

我的错误是使用gridview中的checkboxfield列，但最好在本文中使用templatefield作为solution1。



错误：

<前lang =HTML> < asp：CheckBoxField DataField = ESTPROopc HeaderText = OPC / >

解决方案：此帖子中的SOLUTION1是正确。

 <   asp：TemplateField     HeaderText   =  OPC >  
 <   ItemTemplate  >  
 <   asp：CheckBox     ID   =  ESTPROopc    runat   =  server   < span class =code-attribute>已选中  ='   <％ #Eval（  ESTPROopc）％>'  /  >  
 <   / ItemTemplate  >  
 <   / asp：TemplateField  >  

  bool  ischecked =（（CheckBox） row.FindControl（  ESTPROopc））。已检查; 

我尝试过：

 CheckBox chkOpc = row.Cells [ 4 ]。控件[ 0 ]  as  CheckBox; 
  bool  check = chkOpc.Checked; 

解决方案

请检查下面的代码，我已经测试过了。



ASPX代码：

 <   asp：GridView     ID   =  GridView1    runat   =  server    AutoGenerateColumns   = 错误 >  
 < ;  列 >  
 <   asp：BoundField     DataField   = 标题    HeaderText   = 标题     /  >  
 <   asp：TemplateField  >  
 <   ItemTemplate  >  
 <   asp：CheckBox     ID   =  chk    runat   =  server   已选中  ='  <％ #Eval（  CheckValue）％> ;'    /  >  
 <   / ItemTemplate  >  
 <   / asp：TemplateField  >  
 <   / Co lumns  >  
 <   / asp：GridView  >  
 <   asp：Button     ID   =  btnGetCheck    runat   =  server   文本  = 获取检查    OnClick   =  btnGetCheck_Click    /  >  
 

ASPX.CS代码：

  class  CheckExample 
 {
  public   string 标题{ get ;  set ; } 
  public   bool  CheckValue { get ;  set ; } 
} 
 受保护  void  Page_Load（ object  sender，EventArgs e）
 {
  if （！IsPostBack）
 {
 List< ; CheckExample> list =  new 列表< CheckExample>（）; 
 list.Add（ new  CheckExample（）{Title =   A，CheckValue =  false }）; 
 list.Add（ new  CheckExample（）{Title =   B，CheckValue =  false }）; 
 list.Add（ new  CheckExample（）{Title =   C，CheckValue =  false }）; 
 list.Add（ new  CheckExample（）{Title =   D，CheckValue =  false }）; 
 list.Add（ new  CheckExample（）{Title =   E，CheckValue =  false }）; 
 
 GridView1.DataSource = list; 
 GridView1.DataBind（）; 
} 
} 
 
 受保护  void  btnGetCheck_Click（  object  sender，EventArgs e）
 {
  foreach （GridViewRow row   GridView1.Rows）
 {
  bool  chkValue =（（CheckBox）row.FindControl（   chk））。已检查; 
} 
} 
 

I have a gridview with a "checkboxfield" column, but when I press the asp.net button, all the checkboxes are checked in false due to postback.

I want to get the checkboxes values when I click the button in my codeBehind with C#.

Is it possible?

SOLUTION:
My error was to use the "checkboxfield" column in gridview but is better to use the "templatefield" as the solution1 in this post.

ERROR:

<asp:CheckBoxField DataField="ESTPROopc" HeaderText="OPC"/>

SOLUTION: SOLUTION1 in this post is right.

<asp:TemplateField HeaderText="OPC">
    <ItemTemplate>
       <asp:CheckBox ID="ESTPROopc" runat="server" Checked='<%#Eval("ESTPROopc")%>'/>
    </ItemTemplate>
</asp:TemplateField>

bool ischecked = ((CheckBox)row.FindControl("ESTPROopc")).Checked;

What I have tried:

CheckBox chkOpc = row.Cells[4].Controls[0] as CheckBox;
bool check = chkOpc.Checked;

解决方案

Please check below code, I've tested it.

ASPX CODE:

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False">
    <Columns>
        <asp:BoundField DataField="Title" HeaderText="Title" />
        <asp:TemplateField>
            <ItemTemplate>
                <asp:CheckBox ID="chk" runat="server" Checked='<%#Eval("CheckValue") %>' />
            </ItemTemplate>
        </asp:TemplateField>
    </Columns>
</asp:GridView>
<asp:Button ID="btnGetCheck" runat="server" Text="Get Check" OnClick="btnGetCheck_Click" />

ASPX.CS CODE:

class CheckExample
{
    public string Title { get; set; }
    public bool CheckValue { get; set; }
}
protected void Page_Load(object sender, EventArgs e)
{
    if (!IsPostBack)
    {
        List<CheckExample> list = new List<CheckExample>();
        list.Add(new CheckExample() { Title = "A", CheckValue = false });
        list.Add(new CheckExample() { Title = "B", CheckValue = false });
        list.Add(new CheckExample() { Title = "C", CheckValue = false });
        list.Add(new CheckExample() { Title = "D", CheckValue = false });
        list.Add(new CheckExample() { Title = "E", CheckValue = false });

        GridView1.DataSource = list;
        GridView1.DataBind();
    }
}

protected void btnGetCheck_Click(object sender, EventArgs e)
{
    foreach (GridViewRow row in GridView1.Rows)
    {
        bool chkValue = ((CheckBox)row.FindControl("chk")).Checked;
    }
}

这篇关于按下按钮时如何获取gridview checkboxfield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！