GridViewRow row = GridView1.Rows[index];索引超出范围。必须为非负值并小于集合大小。 参数名: index
时间: 2024-02-05 19:10:52 浏览: 125
这个错误提示是由于你使用的 index 超出了 GridView1.Rows 的范围,建议你检查一下 index 是否合法。
GridView1.Rows 是一个集合,它包含了 GridView 中所有的行,而 index 是一个索引值,用来访问集合中的元素。如果 index 小于 0 或者大于等于集合大小,就会抛出上述异常。
你可以使用 GridView1.Rows.Count 属性来获取 GridView1.Rows 集合中元素的数量,然后再判断 index 是否在合法范围内,例如:
```
if (index >= 0 && index < GridView1.Rows.Count) {
GridViewRow row = GridView1.Rows[index];
// 其他操作
} else {
// index 不合法,进行错误处理
}
```
相关问题
asp.net gridview doubleclick a row
As an AI language model, I cannot perform the action of double-clicking a row in an ASP.NET GridView, but I can provide you with the following steps to achieve this functionality:
1. Add an event handler for the GridView RowCreated event.
2. In the event handler, add the following code to attach a client-side double-click event to the row:
```
protected void GridView1_RowCreated(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
e.Row.Attributes["ondblclick"] = ClientScript.GetPostBackClientHyperlink(GridView1, "Select$" + e.Row.RowIndex);
}
}
```
3. Add an event handler for the GridView SelectedIndexChanged event.
4. In the event handler, add the following code to retrieve the data from the selected row and perform the desired action:
```
protected void GridView1_SelectedIndexChanged(object sender, EventArgs e)
{
GridViewRow row = GridView1.SelectedRow;
// Retrieve data from the row here and perform desired action
}
```
Note: The GridView must have the SelectCommand property set and the AutoGenerateSelectButton property set to true for this to work.
asp 选择打印GridView1
ASP.NET中的GridView是一个用于显示数据网格控件,如果你想从代码中选择并打印GridView1,你可以这样做:
1. 首先,在服务器端的CodeBehind文件中找到处理GridView1相关的事件,如DataBound事件,因为这是数据绑定完成后的一个好时机。
```csharp
protected void GridView1_DataBound(object sender, EventArgs e)
{
// 检查GridView是否已加载完成
if (GridView1.Rows.Count > 0)
{
// 获取GridView的HTML表格内容
StringBuilder htmlTable = new StringBuilder();
foreach (GridViewRow row in GridView1.Rows)
{
htmlTable.Append(row.Cells.ToString());
}
// 创建一个新页面,设置响应类型为PDF以便打印
Response.ClearContent();
Response.ContentType = "application/pdf";
Response.AddHeader("content-disposition", "attachment; filename=GridViewReport.pdf");
// 将HTML转换为PDF并发送到浏览器进行打印
Response.Write(ConvertHtmlToPdf(htmlTable.ToString()));
}
}
```
这里假设`ConvertHtmlToPdf`函数将HTML字符串转换为PDF格式。你需要一个适合的第三方库,比如iTextSharp或PDFsharp,来进行这个转换。
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