Gridview标头中的CheckBox [英] CheckBox in Gridview Header

问题描述

我在Gridview Header中有复选框，如果我将检查标题复选框，它将检查所有行复选框和另一个选项，当用户提交表单数据时，它应该至少需要一个复选框check.without使用javascript函数... c＃和asp.net代码... plz帮助..

I am having checkbox in Gridview Header , if i will check header checkbox it will check all the rows checkboxes and one more option when user submit the form data it should required atleast one checkbox checked.without using javascript function...only c# and asp.net code... plz help..

推荐答案

请参考这个非常基本的代码。我假设你在gridview的第一个单元格中有复选框（Cells [0]）

Please refer to this very basic code. I assume you have checkbox at first cell of gridview ( Cells[0] )

int count=0;
for (int i = 0; i < GridView1.Rows.Count; i++)
{
     CheckBox chk= (CheckBox)GridView1.Rows[i].Cells[0].FindControl("CheckBox1");
     if (chk.Checked == true)
     {
       count++;
     }
}
if(count==0)
{
//no check box is checked take action accordingly
}
else
{
//Atleast one checkbox is checked proceed with the submit procedure
}

问候..：）

Regards..:)

您好



您还可以执行此查找标题模板并根据标题模板的状态复选框更新项目模板中的其他状态复选框。

Hi

You also do this finding the header template and based on the status of the header template checkbox you can update the other status in the item template checkbox.

protected void cbxHdrPresent_OnCheckedChanged(object sender, EventArgs e)
    {
        int chkCount = 0;
        CheckBox chkHead = (CheckBox)gvBrowse.HeaderRow.FindControl("cbxHdrPresent");
        if (chkHead.Checked)
        {
            for (int i = 0; i < gvBrowse.Rows.Count; i++)
            {
                CheckBox chk = (CheckBox)gvBrowse.Rows[i].FindControl("cbxItmPresent");
                chk.Checked = true;
                chkCount++;
            }
        }
        else
        {
            for (int i = 0; i < gvBrowse.Rows.Count; i++)
            {
                CheckBox chk = (CheckBox)gvBrowse.Rows[i].FindControl("cbxItmPresent");
                chk.Checked = false;
            }
        }

        if (chkCount > 0)
        {

        }
        else
        {

        }
    }

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