如何选择datagridview中的所有复选框 [英] How to select all checkboxes in datagridview

问题描述

您好我已经写了belw代码来选择所有复选框但我无法这样做。请帮助



我尝试过：

hi i have written belw code to select all checkboxes but i am unable to do so.please help

What I have tried:

CheckBox HeaderCheckBox=null;
    bool IsHeaderCheckBoxClicked=false;
    private void AddHeaderCheckBox()
    {
        HeaderCheckBox= new CheckBox();
        HeaderCheckBox.Size=new Size(15,15);
        //add check ti DGV
        this.dataGridView1.Controls.Add(HeaderCheckBox);
    }
    private void HeaderCheckBoxClick(CheckBox HCheckBox)
    {
        IsHeaderCheckBoxClicked =true;
        foreach(DataGridView Row in dataGridView1.Rows)
            (DataGridViewCheckBoxCell)Row.CellStateChanged["chk"].value=HCheckBox.Checked;
    }

public void MainFormLoad(object sender, EventArgs e)
		{	

AddHeaderCheckBox();
		}

推荐答案

foreach (DataGridViewRow row in dataGridView1.Rows)
{
       DataGridViewCheckBoxCell chk = (DataGridViewCheckBoxCell) row.Cells[0];
       chk.Value = !(chk.Value == null ? false : (bool) chk.Value); //because chk.Value is initialy null
}

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