一列中搜索值的DataGridView [英] Search for value in DataGridView in a column

问题描述

我希望用户能够在在DataGridView（DGV）的柱以搜索一个数字。该DGV可以容纳多条记录。每个记录有一个项目编号。所以，我希望用户能够搜索栏项目编号项目数量。我的列有：专案编号（不可见）;照片（不HEADERTEXT）;项目编号;项目名;公司;联系

I want the user to be able to search for a number in a column in the DataGridView (dgv). The dgv can hold many records. Each record has a Project Number. So I want the user to be able to search for a project number in column Project Number. The columns I have are: ProjectID(not visible); Image(no headertext); Project Number; Project Name; Company; Contact.

下面是我的代码：

private void btnSearch_Click(object sender, EventArgs e)
{
    string searchValue = textBox1.Text;
    int rowIndex = -1;

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

问题1：它迄今功能：通过用户在TextBox1中的项目编号。当他/她点击该按钮，代码搜索此字符串中的行，当发现项目数，该行被选中。它工作正常，但只有一次。当我要搜索的其他项目数，什么都不会发生。

Problem #1: What it does so far: The user types the project number in TextBox1. When he/she clicks the button, the code searches for this string in the rows, and when found the project number, that row gets selected. It works fine, but only once. When I want to search for an other project number, nothing happens.

问题2：我认为这是可以以更好的方式来完成，由唯一的一列项目名称搜索值。但如何我应该这样做是否正确？

Problem #2: I think this can be done in a better way, by searching the values for column Project Name only. But how should I do this properly?

我用来搜索代码来自的这个答案

The code I used to search comes from this answer

推荐答案

为什么你正在使用row.Cells [row.Index] 。您需要指定要搜索列指数（问题2）。例如，您需要更改row.Cells [row.Index]到row.Cells [2]，其中2是你列的索引：

Why you are using row.Cells[row.Index]. You need to specify index of column you want to search (Problem #2). For example, you need to change row.Cells[row.Index] to row.Cells[2] where 2 is index of your column:

private void btnSearch_Click(object sender, EventArgs e)
{
    string searchValue = textBox1.Text;

    dgvProjects.SelectionMode = DataGridViewSelectionMode.FullRowSelect;
    try
    {
        foreach (DataGridViewRow row in dgvProjects.Rows)
        {
            if (row.Cells[2].Value.ToString().Equals(searchValue))
            {
                row.Selected = true;
                break;
            }
        }
    }
    catch (Exception exc)
    {
        MessageBox.Show(exc.Message);
    }
}

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