Question

我正在Windows窗体应用程序上工作。

它包含两种形式的MainForm-Test和childForm-Search

搜索表单具有dataGridView控件，其中包含SrNo，TypeNo，TestEngineer和Date之类的列。测试表单包含文本框tb_SerialNo，tb_TypeNo，tb_TestEngineer和datTimePicker作为日期。

我的主要问题是，当我从datagridview中选择“行”时，我想要文本框中tb_SerialNo中该行的SrNo列值。所有人都一样。

我写了以下代码。但是它只给我tb_SerialNo中的SrNo值。但是我没有在相应的文本框中得到TypeNo，TestEnginer和日期值。我找不到我想念的东西。请帮助我解决此问题。预先感谢。

mainForm-测试代码

private void SearchToolStripMenuItem_Click(object sender, EventArgs e)
    {
        SearchTest Search = new SearchTest(dt);
        Search.ShowDialog();
        dt.DefaultView.RowFilter = "";
        tb_SerialNo.Text = Search.SerialNo;
        Search.typeNo = tb_TypeNo.Text;
        Search.TestEngineer = tb_TestEngineer.Text;
        Search.Date = dateTimePicker1.Text;
    }

ChildForm -SearTest代码：

public partial class SearchTest : Form
{
    public SearchTest(DataTable TestData)
    {
        InitializeComponent();
        dataGridView1.DataSource = TestData;
        this.dataGridView1.Sort(this.dataGridView1.Columns["SrNo"], ListSortDirection.Ascending);
    }


    private void btn_Search_Click(object sender, EventArgs e)
    {
        string str = dateTimePicker1.Text;
        string str1 = dateTimePicker2.Text;

        DateTime date = DateTime.ParseExact(str, "MM/dd/yyyy", CultureInfo.GetCultureInfo("en-GB"));
        DateTime date1 = DateTime.ParseExact(str1, "MM/dd/yyyy", CultureInfo.GetCultureInfo("en-GB"));
        string dtFilter = string.Format("[Date] >= '{0} ' AND [Date] <= '{1} '", date.ToString("MM/dd/yyyy"), date1.ToString("MM/dd/yyyy"));
        (dataGridView1.DataSource as DataTable).DefaultView.RowFilter = dtFilter;

    }

    private void tb_SearchSrNo_TextChanged(object sender, EventArgs e)
    {
        try
        {
            (dataGridView1.DataSource as DataTable).DefaultView.RowFilter = String.IsNullOrEmpty(tb_SearchSrNo.Text) ?
                "SrNo IS NOT NULL" :
                String.Format("SrNo LIKE '{0}%' OR SrNo LIKE '{1}%' OR SrNo LIKE '{2}%'", tb_SearchSrNo.Text, tb_SearchSrNo.Text, tb_SearchSrNo.Text);
        }
        catch (System.Exception ex)
        {
            MessageBox.Show(ex.Message);
        }
    }

    private void SearchTest_Load(object sender, EventArgs e)
    {
        groupBox1.Enabled = false;
        groupBox3.Enabled = false;
        cb_Filter.MouseWheel += new MouseEventHandler(cb_Filter_MouseWheel);
    }

    private void cb_Filter_SelectedIndexChanged(object sender, EventArgs e)
    {
        if (cb_Filter.SelectedIndex == 0)
        {
            groupBox1.Enabled = true;
        }
        else
        {
            groupBox3.Enabled = true;
        }
    }
    void cb_Filter_MouseWheel(object sender, MouseEventArgs e)
    {
        ((HandledMouseEventArgs)e).Handled = true;
    }

    private string SrNo;
    private string TypeNo;
    private string TestEng;
    private string date;

    public string SerialNo
    {
        get { return SrNo; }
        set { SrNo = value; }
    }
    public string typeNo
    {
        get { return TypeNo; }
        set { TypeNo = value; }
    }
    public string TestEngineer
    {
        get { return TestEng; }
        set { TestEng = value; }
    }
    public string Date
    {
        get { return date; }
        set { date = value; }
    }
    private void dataGridView1_SelectionChanged(object sender, EventArgs e)
    {
        SrNo = dataGridView1.CurrentRow.Cells["SrNo"].Value.ToString();
        TypeNo = dataGridView1.CurrentRow.Cells["TypeNo"].Value.ToString();
        TestEng = dataGridView1.CurrentRow.Cells["TestEngineer"].Value.ToString();
        date = dataGridView1.CurrentRow.Cells["Date"].Value.ToString();
    }

}

Answer 1

您可以将属性定义更改为以下内容：

public string SomeProperty
{
    get 
    { 
        string value = null;
        if(BindingContext[dataGridView1.DataSource].Current !=null)
        {  
           var r = ((DataRowView)BindingContext[dataGridView1.DataSource].Current).Row;    
           value = r.Field<string>("SomeDataColumn");
        }
        return value;
    }
}

这样，SomeProperty将始终从活动行中返回SomeDataColumn的值。

Answer 2

尝试改用SelectedRow。
SelectedRow和CurrentRow之间的区别：

CurrentRow是鼠标光标所在的位置，由系统选择。
SelectedRow是在datagridview中选择的行，并且始终由用户选择。

这是示例代码：

private void dataGridView1_SelectionChanged(object sender, EventArgs e)
{
    if (dataGridView1.SelectedCells.Count > 0)
    {
        int index = dataGridView1.SelectedCells[0].RowIndex;
        DataGridViewRow selectedRow = dataGridView1.Rows[index];

        SrNo = selectedRow.Cells["SrNo"].Value.ToString();
        TypeNo = selectedRowCells["TypeNo"].Value.ToString();
        TestEng = selectedRowCells["TestEngineer"].Value.ToString();
        date = selectedRowCells["Date"].Value.ToString();
    }
}

Answer 3

我找到了答案，问题已经解决。我在mainForm中发现了我的错误-测试代码。除序列号外，我以错误的方式将属性用于typeNo，TestEngineer和日期。这就是为什么我没有在各个文本框中获取值的原因。

更正后的MainForm-测试代码：

private void SearchToolStripMenuItem_Click(object sender, EventArgs e)
{
    SearchTest Search = new SearchTest(dt);
    Search.ShowDialog();
    dt.DefaultView.RowFilter = "";

    tb_SerialNo.Text = Search.SerialNo;
    tb_TypeNo.Text = Search.typeNo;
    tb_TestEngineer.Text = Search.TestEngineer;
    dateTimePicker1.Text = Search.Date;
}

无需在搜索表单中进行任何更改。

如何在TextBoxes中获取选定行的dataGridView的所有列值

3 个答案: