String was not recognized as a valid DateTime

Ramco Ramco

3y973.NET

I am geeting above error on below line. In ltrlSessionDate.Text value is "21-06-2023"

DateTime sessionDate = DateTime.ParseExact(ltrlSessionDate.Text, "dd-MM-yyyy", CultureInfo.InvariantCulture);

Thanks

7 Replies

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Naimish Makwana3y ago
Accepted answer
The error you are encountering could occur due to a few different reasons.

First, make sure that the value of ltrlSessionDate.Text is indeed "21-06-2023" and that it is not null or empty.

Secondly, ensure that the format specified in DateTime.ParseExact matches the format of the date string exactly. In this case, it looks like you are trying to parse a date in the format "dd-MM-yyyy". If the format of the date string is different, you will need to adjust the format string accordingly.

Finally, it is possible that the culture specified in CultureInfo.InvariantCulture may not be appropriate for the date format you are trying to parse. You may need to specify a different culture that matches the format of the date string.

To troubleshoot the issue further, you can try adding some error handling to your code to catch any exceptions that may be thrown during the parsing process. For example:
```
try
{
    DateTime sessionDate = DateTime.ParseExact(ltrlSessionDate.Text, "dd-MM-yyyy", CultureInfo.InvariantCulture);
}
catch (Exception ex)
{
    // Handle the exception here
}
```
This will allow you to identify and handle any errors that may occur during the parsing process.

Thanks

Naimish Makwana
Ramco Ramco3y ago
Hi Naimish

How i can get hiddenfield value in itemdatabound

Thanks

Ramco Ramco3y ago

Hi Naimish

I have written the same code but still it is giving error. When i comment it workd fine

if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
                {
                    
                    RepeaterItem rptitem = e.Item;
                    Literal ltrlSessionDate = ((Literal)e.Item.FindControl("ltrlLastSessionDate"));

                    
                    BALGroupParticipant bALGroupParticipant = new BALGroupParticipant();
                    GroupParticipant objGrpResult = bALGroupParticipant.CheckStudentAlreadyAdded(Convert.ToInt32(ltrlStudentId.Text), Convert.ToInt32(hdfGroupId.Value));
                    if (objGrpResult != null)
                    {
                        DateTime sessionDate = DateTime.ParseExact(ltrlSessionDate.Text.Trim(), "dd-MM-yyyy", CultureInfo.InvariantCulture);
}

Thanks

Rajkiran Swain3y ago

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
    if (e.Row.RowType == DataControlRowType.DataRow)
    {
        // Get the value of ltrlSessionDate from the row
        Literal ltrlSessionDate = (Literal)e.Row.FindControl("ltrlSessionDate");
        if (ltrlSessionDate != null)
        {
            // Convert the value of ltrlSessionDate to a DateTime object
            DateTime sessionDate = DateTime.ParseExact(ltrlSessionDate.Text, "dd-MM-yyyy", CultureInfo.InvariantCulture);

            // Compare the sessionDate with another date
            DateTime otherDate = new DateTime(2023, 6, 30); // Example: June 30, 2023
            if (sessionDate > otherDate)
            {
                // Do something if sessionDate is later than otherDate
            }
            else
            {
                // Do something else if sessionDate is earlier or equal to otherDate
            }
        }
    }
}

Naimish Makwana3y ago

To compare the value of ltrlSessionDate.Text with another date in the ItemDataBound event, you can parse both dates as DateTime objects and then compare them using the DateTime comparison operators.

For example, if you have another date stored in a variable otherDate, you could compare it with ltrlSessionDate.Text as follows:

protected void YourRepeater_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
    if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
    {
        // Get the Literal control for the SessionDate column
        Literal ltrlSessionDate = (Literal)e.Item.FindControl("ltrlSessionDate");

        // Parse the value of the SessionDate column as a DateTime object
        DateTime sessionDate = DateTime.ParseExact(ltrlSessionDate.Text, "dd-MM-yyyy", CultureInfo.InvariantCulture);

        // Compare the sessionDate with another date
        DateTime otherDate = DateTime.Now;
        if (sessionDate > otherDate)
        {
            // Do something
        }
    }
}

In the example above, we parse the value of ltrlSessionDate.Text as a DateTime object using the DateTime.ParseExact method, and then compare it with otherDate using the > operator. You can modify this comparison to use any other comparison operator as needed.

Thanks

Ramco Ramco3y ago
Hi Naimish

I have below code . How in itemdatabound i can compare this with another Date

Value in ltrlSessionDate.Text is indeed "21-06-2023".
Thanks

Rajkiran Swain3y ago

DateTime sessionDate = DateTime.ParseExact(ltrlSessionDate.Text + " 00:00 AM", "dd-MM-yyyy hh:mm tt", CultureInfo.InvariantCulture);