C# 如何在使用asp .net检查的gridview中获取CheckBoxes的值
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How to get values of CheckBoxes inside a gridview that are checked using asp .net
提问by
I am using checkbox in gridview .... I am using it in 1st cell.... When I select the checkbox at run time, I need to get those values... but on selecting or on click to checkbox, it's not finding or value is taking as FALSE... how to write in asp.net backend and in c# code?
我在 gridview 中使用复选框......我在第一个单元格中使用它......当我在运行时选择复选框时，我需要获取这些值......但是在选择或单击复选框时，它不是发现或值被视为错误...如何在 asp.net 后端和 c# 代码中编写？
<asp:TemplateField>
<ItemTemplate >
<asp:checkbox id="ShowAddress" runat="server" />
</ItemTemplate>
</asp:TemplateField>
Code-behind:
代码隐藏：
protected void Button1_Click(object sender, EventArgs e)
{
// Looping through all the rows in the GridView
foreach (GridViewRow di in GridView1.Rows)
{
CheckBox chkBx = (CheckBox)di.FindControl("ShowAddress");
if (chkBx != null && chkBx.Checked)
{
/// put your code here
}
}
}
Is there any implementation to be done in script at page load?
页面加载时是否有任何要在脚本中完成的实现？
Can anyone help?
任何人都可以帮忙吗？
回答by Jakob Christensen
How do you populate your GridView? If you do this in Page_Load, make sure you are not doing it on postbacks (check IsPostBack).
你如何填充你的 GridView？如果您在 Page_Load 中执行此操作，请确保您没有在回发中执行此操作（检查 IsPostBack）。
Is your chkBx variable null?
您的 chkBx 变量是否为空？
The following code works:
以下代码有效：
protected void Button1_Click(object sender, EventArgs e)
{
foreach (GridViewRow row in GridView1.Rows)
{
CheckBox chk = row.Cells[0].Controls[0] as CheckBox;
if (chk != null && chk.Checked)
{
// ...
}
}
}
回答by USA
StringCollection idCollection = new StringCollection();
string strID = string.Empty;
for (int i = 0; i < GridView1.Rows.Count; i++)
{
CheckBox chkDelete = (CheckBox) GridView1.Rows.Cells[0].FindControl("chkSelect");
if (chkDelete != null)
{
if (chkDelete.Checked)
{
strID = GridView1.Rows.Cells[1].Text;
idCollection.Add(strID);
}
}
}
for more details check this link: http://www.itworld2.com/ghowto.aspx?id=69
有关更多详细信息，请查看此链接：http: //www.itworld2.com/ghowto.aspx?id=69
回答by Fakurdeen
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
Loadgridview();// its a correct
}// not Loadgridview() here if you load above error is occur
}
check it
核实
回答by Vaibhav Saran
int i = 0;
foreach (GridViewRow row in GridView1.Rows)
{
CheckBox chk = (CheckBox)GridView_AdminTags.Rows[i].Cells[0].FindControl("chkTag");
if (chk != null)
if (chk.Checked)
{
////.......;
}
i++;
}
i = 0;
回答by user3814410
Jakob Answer will work if below line is used. Even one control only in the cell, index need to be 1 not 0
如果使用以下行，Jakob Answer 将起作用。即使一个控件只在单元格中，索引也需要为 1 而不是 0
CheckBox chk = row.Cells[0].Controls[1] as CheckBox;
Thank you Sam
谢谢山姆
