Question

我有*。我将读入GridView的Mdf数据库......然后我将为用户提供搜索人员的能力（通过姓氏）。代码工作正常，直到搜索。当我输入姓氏并考虑搜索时，则会收到来自Catch up的错误消息。

我是C＃的初学者，谦虚地请求认真的答案。

提前致谢。

我的代码

   public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
    }

    private void Form1_Load(object sender, EventArgs e)
    {
        // TODO: This line of code loads data into the 'baseballDataSet.Players' table. You can move, or remove it, as needed.
        this.playersTableAdapter.Fill(this.baseballDataSet.Players);

    }

    private void search_Click(object sender, EventArgs e)
    {
        string searchValue = sInput.Text;

        dataGridView1.SelectionMode = DataGridViewSelectionMode.FullRowSelect;
        try
        {
            foreach (DataGridViewRow row in dataGridView1.Rows)
            {
                if (row.Cells[3].Value.ToString().Equals(searchValue))
                {
                    row.Selected = true;
                    break;
                }
            }
        }
        catch (Exception exc)
        {
            MessageBox.Show(exc.Message);
        }
    }

Answer 1

你应该在你的foreach中跳过row.IsNewRow == true的行... .Value在那里为空...

try
{
    foreach (DataGridViewRow row in dataGridView1.Rows)
    {
        if (row.IsNewRow) continue;

        if (row.Cells[3].Value.ToString().Equals(searchValue))
        {
            ....

在* .mdf中搜索不起作用

1 个答案: