说明如何使用FirstDisplayedScrollingRowIndex [英] Clarification on how to use FirstDisplayedScrollingRowIndex

问题描述

刚刚发布，需要澄清财产。 （注意，我知道这个问题与其他人相似，因此我试图在其他地方寻找解决方案，但找不到确切的解决方案）。

我是相当新的编程，不知道如何使一个 DataGridView 滚动到用户选择的行。我尝试使用 FirstDisplayedScrollingRowIndex ，但出现以下错误：

错误：不能隐式将类型System.Windows.Forms.DataGridViewRow转换为int

当我尝试将所选行用户到datagridview的顶部：

  dataGridView1.FirstDisplayedScrollingRowIndex = dataGridView1.Rows [i] 
  

以下是完整的代码：

  String searchVal = textBox1.Text; 
 
 for（int i = 0; i< dataGridView1.RowCount; i ++）
 {
 if（dataGridView1.Rows [i] .Cells [0] .Value！= null&&&&DataGridView1.Rows [i] .Cells [0] .Value.ToString（）。Contains（searchVal））
 {
 dataGridView1.FirstDisplayedScrollingRowIndex = dataGridView1.Rows [i]; 
 dataGridView1.Update（）; 
} 
} 
  

解决方案

到文档， FirstDisplayedScrollingRowIndex ：

获取或设置DataGridView上显示的第一行的索引。 >

您已经将索引存储在 i ...尝试使用： / p>

  dataGridView1.FirstDisplayedScrollingRowIndex = i; 
  

---

为了解决您在评论中的第二个问题，如何找到第一个完全匹配（如果有的话）：

  var selectedRow = dataGridView1.Rows.Cast< DataGridViewRow>（） 
 .FirstOrDefault（x => Convert.ToString（x.Cells [0] .Value）== searchVal）; 
 
 if（selectedRow！= null）
 {
 dataGridView1.FirstDisplayedScrollingRowIndex = dataGridView1.Rows [i]; 
 dataGridView1.Update（）; 
} 
  

Just posted before and need clarification on a property. (Note I know this question is similar to others and hence I tried looking elsewhere for the solution but couldn't find the exact one for this situation).

I'm rather new to programming and don't know how to make a DataGridView scroll to the row selected by a user. I tried using FirstDisplayedScrollingRowIndex but am getting the following error:

Error: Cannot implicitly convert type 'System.Windows.Forms.DataGridViewRow' to 'int'

Which occurs when I try to bring the selected row by the user to the top of the datagridview:

dataGridView1.FirstDisplayedScrollingRowIndex = dataGridView1.Rows[i]

Here is the full code:

String searchVal = textBox1.Text;

for (int i = 0; i < dataGridView1.RowCount; i++)
{
    if (dataGridView1.Rows[i].Cells[0].Value != null && dataGridView1.Rows[i].Cells[0].Value.ToString().Contains(searchVal))
    {
        dataGridView1.FirstDisplayedScrollingRowIndex = dataGridView1.Rows[i];
        dataGridView1.Update();
    }
}

解决方案

According to the documentation, FirstDisplayedScrollingRowIndex:

Gets or sets the index of the row that is the first row displayed on the DataGridView.

You already have the index stored in i ... try just using that:

dataGridView1.FirstDisplayedScrollingRowIndex = i;

---

To address your second question in the comments, here's how you can find the first exact match (if any):

var selectedRow = dataGridView1.Rows.Cast<DataGridViewRow>()
                   .FirstOrDefault(x => Convert.ToString(x.Cells[0].Value) == searchVal);

if (selectedRow != null)
{
    dataGridView1.FirstDisplayedScrollingRowIndex = dataGridView1.Rows[i];
    dataGridView1.Update();
}

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